DOC: Fix PR08 in docstrings
Hi all, 

This is my very first time contributing to an open source project and have tried to follow all guidelines. Apologies if I missed something.

This relates to  [#28031](https://github.com/pandas-dev/pandas/pull/28031)

I have ran `python ./scripts/validate_docstrings.py --errors=PR08` and recieved the following errors regarding capital letters. There are quite a few in here that where the parameter descriptions start with a integer i.e. in pandas.tseries.offsets.WeekOfMonth:

```
class WeekOfMonth(_WeekOfMonthMixin, DateOffset):
    """
    Describes monthly dates like "the Tuesday of the 2nd week of each month".

    Parameters
    ----------
    n : int
    week : {0, 1, 2, 3, ...}, default 0
        0 is 1st week of month, 1 2nd week, etc.
```
Could I please get some advice on how to handle those?

#### Current Errors for PR08

```
pandas.tseries.offsets.CustomBusinessDay: Parameter "weekmask" description should start with a capital letter
pandas.tseries.offsets.CustomBusinessDay: Parameter "holidays" description should start with a capital letter
pandas.tseries.offsets.WeekOfMonth: Parameter "week" description should start with a capital letter
pandas.tseries.offsets.WeekOfMonth: Parameter "weekday" description should start with a capital letter
pandas.tseries.offsets.LastWeekOfMonth: Parameter "weekday" description should start with a capital letter
pandas.tseries.offsets.FY5253: Parameter "weekday" description should start with a capital letter
pandas.tseries.offsets.FY5253: Parameter "variation" description should start with a capital letter
pandas.tseries.offsets.FY5253Quarter: Parameter "weekday" description should start with a capital letter
pandas.tseries.offsets.FY5253Quarter: Parameter "qtr_with_extra_week" description should start with a capital letter
pandas.tseries.offsets.FY5253Quarter: Parameter "variation" description should start with a capital letter
pandas.tseries.offsets.CDay: Parameter "weekmask" description should start with a capital letter
pandas.tseries.offsets.CDay: Parameter "holidays" description should start with a capital letter
pandas.Series.pipe: Parameter "func" description should start with a capital letter
pandas.Series.pipe: Parameter "args" description should start with a capital letter
pandas.Series.pipe: Parameter "kwargs" description should start with a capital letter
pandas.Series.corr: Parameter "method" description should start with a capital letter
pandas.Series.quantile: Parameter "q" description should start with a capital letter
pandas.Series.drop_duplicates: Parameter "keep" description should start with a capital letter
pandas.Series.duplicated: Parameter "keep" description should start with a capital letter
pandas.Series.rename: Parameter "index" description should start with a capital letter
pandas.Series.reorder_levels: Parameter "order" description should start with a capital letter
pandas.Series.dt.tz_localize: Parameter "errors" description should start with a capital letter
pandas.Series.str.match: Parameter "flags" description should start with a capital letter
pandas.Series.str.replace: Parameter "case" description should start with a capital letter
pandas.Series.str.replace: Parameter "flags" description should start with a capital letter
pandas.Series.str.replace: Parameter "regex" description should start with a capital letter
pandas.Series.str.translate: Parameter "table" description should start with a capital letter
pandas.Series.cat.rename_categories: Parameter "new_categories" description should start with a capital letter
pandas.Series.plot: Parameter "kind" description should start with a capital letter
pandas.Series.plot: Parameter "style" description should start with a capital letter
pandas.Series.hist: Parameter "xrot" description should start with a capital letter
pandas.Series.hist: Parameter "yrot" description should start with a capital letter
pandas.Series.hist: Parameter "figsize" description should start with a capital letter
pandas.Series.to_msgpack: Parameter "path" description should start with a capital letter
pandas.Series.to_msgpack: Parameter "append" description should start with a capital letter
pandas.Series.to_msgpack: Parameter "compress" description should start with a capital letter
pandas.Series.to_clipboard: Parameter "excel" description should start with a capital letter
pandas.Timestamp.ceil: Parameter "ambiguous" description should start with a capital letter
pandas.Timestamp.day_name: Parameter "locale" description should start with a capital letter
pandas.Timestamp.floor: Parameter "ambiguous" description should start with a capital letter
pandas.Timestamp.fromordinal: Parameter "ordinal" description should start with a capital letter
pandas.Timestamp.month_name: Parameter "locale" description should start with a capital letter
pandas.Timestamp.round: Parameter "ambiguous" description should start with a capital letter
pandas.Timestamp.tz_localize: Parameter "errors" description should start with a capital letter
pandas.Period.to_timestamp: Parameter "how" description should start with a capital letter
pandas.arrays.IntervalArray.from_tuples: Parameter "copy" description should start with a capital letter
pandas.arrays.IntervalArray.from_breaks: Parameter "copy" description should start with a capital letter
pandas.read_msgpack: Parameter "iterator" description should start with a capital letter
pandas.io.json.build_table_schema: Parameter "primary_key" description should start with a capital letter
pandas.read_html: Parameter "skiprows" description should start with a capital letter
pandas.HDFStore.put: Parameter "format" description should start with a capital letter
pandas.HDFStore.append: Parameter "format" description should start with a capital letter
pandas.HDFStore.append: Parameter "append      " description should start with a capital letter
pandas.HDFStore.append: Parameter "dropna      " description should start with a capital letter
pandas.read_feather: Parameter "nthreads" description should start with a capital letter
pandas.read_feather: Parameter "use_threads" description should start with a capital letter
pandas.read_sql_table: Parameter "parse_dates" description should start with a capital letter
pandas.read_sql_query: Parameter "con" description should start with a capital letter
pandas.read_sql_query: Parameter "parse_dates" description should start with a capital letter
pandas.read_sql: Parameter "con" description should start with a capital letter
pandas.read_sql: Parameter "parse_dates" description should start with a capital letter
pandas.core.resample.Resampler.get_group: Parameter "name" description should start with a capital letter
pandas.core.resample.Resampler.get_group: Parameter "obj" description should start with a capital letter
pandas.core.resample.Resampler.pipe: Parameter "args" description should start with a capital letter
pandas.core.resample.Resampler.pipe: Parameter "kwargs" description should start with a capital letter
pandas.core.resample.Resampler.ffill: Parameter "limit" description should start with a capital letter
pandas.core.resample.Resampler.pad: Parameter "limit" description should start with a capital letter
pandas.core.resample.Resampler.sem: Parameter "ddof" description should start with a capital letter
pandas.core.resample.Resampler.var: Parameter "ddof" description should start with a capital letter
pandas.plotting.parallel_coordinates: Parameter "ax" description should start with a capital letter
pandas.plotting.scatter_matrix: Parameter "alpha" description should start with a capital letter
pandas.plotting.scatter_matrix: Parameter "figsize" description should start with a capital letter
pandas.plotting.scatter_matrix: Parameter "grid" description should start with a capital letter
pandas.plotting.scatter_matrix: Parameter "diagonal" description should start with a capital letter
pandas.plotting.scatter_matrix: Parameter "range_padding" description should start with a capital letter
pandas.api.types.union_categoricals: Parameter "to_union" description should start with a capital letter
pandas.merge_ordered: Parameter "how" description should start with a capital letter
pandas.merge_asof: Parameter "allow_exact_matches" description should start with a capital letter
pandas.to_numeric: Parameter "errors" description should start with a capital letter
pandas.to_datetime: Parameter "arg" description should start with a capital letter
pandas.to_datetime: Parameter "errors" description should start with a capital letter
pandas.to_datetime: Parameter "box" description should start with a capital letter
pandas.to_datetime: Parameter "format" description should start with a capital letter
pandas.to_datetime: Parameter "exact" description should start with a capital letter
pandas.to_datetime: Parameter "unit" description should start with a capital letter
pandas.to_timedelta: Parameter "box" description should start with a capital letter
pandas.to_timedelta: Parameter "errors" description should start with a capital letter
pandas.infer_freq: Parameter "index" description should start with a capital letter
pandas.util.hash_array: Parameter "encoding" description should start with a capital letter
pandas.util.hash_pandas_object: Parameter "index" description should start with a capital letter
pandas.util.hash_pandas_object: Parameter "encoding" description should start with a capital letter
pandas.Index.drop_duplicates: Parameter "keep" description should start with a capital letter
pandas.Index.is_: Parameter "other" description should start with a capital letter
pandas.Index.fillna: Parameter "downcast" description should start with a capital letter
pandas.Index.to_series: Parameter "index" description should start with a capital letter
pandas.Index.to_series: Parameter "name" description should start with a capital letter
pandas.Index.get_indexer: Parameter "method" description should start with a capital letter
pandas.Index.get_loc: Parameter "method" description should start with a capital letter
pandas.CategoricalIndex.rename_categories: Parameter "new_categories" description should start with a capital letter
pandas.IntervalIndex.from_tuples: Parameter "copy" description should start with a capital letter
pandas.IntervalIndex.from_breaks: Parameter "copy" description should start with a capital letter
pandas.IntervalIndex.get_loc: Parameter "method" description should start with a capital letter
pandas.IntervalIndex.get_indexer: Parameter "method" description should start with a capital letter
pandas.MultiIndex.set_levels: Parameter "levels" description should start with a capital letter
pandas.MultiIndex.set_levels: Parameter "level" description should start with a capital letter
pandas.MultiIndex.set_levels: Parameter "inplace" description should start with a capital letter
pandas.MultiIndex.set_levels: Parameter "verify_integrity" description should start with a capital letter
pandas.MultiIndex.set_codes: Parameter "codes" description should start with a capital letter
pandas.MultiIndex.set_codes: Parameter "level" description should start with a capital letter
pandas.MultiIndex.set_codes: Parameter "inplace" description should start with a capital letter
pandas.MultiIndex.set_codes: Parameter "verify_integrity" description should start with a capital letter
pandas.MultiIndex.get_loc_level: Parameter "drop_level" description should start with a capital letter
pandas.MultiIndex.get_indexer: Parameter "method" description should start with a capital letter
pandas.MultiIndex.get_level_values: Parameter "level" description should start with a capital letter
pandas.DatetimeIndex.indexer_at_time: Parameter "time" description should start with a capital letter
pandas.DatetimeIndex.indexer_between_time: Parameter "start_time, end_time" description should start with a capital letter
pandas.DatetimeIndex.tz_localize: Parameter "errors" description should start with a capital letter
pandas.TimedeltaIndex.to_series: Parameter "index" description should start with a capital letter
pandas.TimedeltaIndex.to_series: Parameter "name" description should start with a capital letter
pandas.PeriodIndex.asfreq: Parameter "freq" description should start with a capital letter
pandas.PeriodIndex.asfreq: Parameter "how" description should start with a capital letter
pandas.core.window.rolling.Rolling.apply: Parameter "raw" description should start with a capital letter
pandas.core.window.expanding.Expanding.apply: Parameter "raw" description should start with a capital letter
pandas.core.groupby.GroupBy.get_group: Parameter "name" description should start with a capital letter
pandas.core.groupby.GroupBy.get_group: Parameter "obj" description should start with a capital letter
pandas.Grouper: Parameter "key" description should start with a capital letter
pandas.Grouper: Parameter "level" description should start with a capital letter
pandas.Grouper: Parameter "sort" description should start with a capital letter
pandas.core.groupby.GroupBy.pipe: Parameter "args" description should start with a capital letter
pandas.core.groupby.GroupBy.pipe: Parameter "kwargs" description should start with a capital letter
pandas.core.groupby.GroupBy.bfill: Parameter "limit" description should start with a capital letter
pandas.core.groupby.GroupBy.ffill: Parameter "limit" description should start with a capital letter
pandas.core.groupby.GroupBy.nth: Parameter "n" description should start with a capital letter
pandas.core.groupby.GroupBy.nth: Parameter "dropna" description should start with a capital letter
pandas.core.groupby.GroupBy.rank: Parameter "method" description should start with a capital letter
pandas.core.groupby.GroupBy.rank: Parameter "na_option" description should start with a capital letter
pandas.core.groupby.GroupBy.sem: Parameter "ddof" description should start with a capital letter
pandas.core.groupby.GroupBy.std: Parameter "ddof" description should start with a capital letter
pandas.core.groupby.GroupBy.var: Parameter "ddof" description should start with a capital letter
pandas.core.groupby.DataFrameGroupBy.bfill: Parameter "limit" description should start with a capital letter
pandas.core.groupby.DataFrameGroupBy.corr: Parameter "method" description should start with a capital letter
pandas.core.groupby.DataFrameGroupBy.ffill: Parameter "limit" description should start with a capital letter
pandas.core.groupby.DataFrameGroupBy.filter: Parameter "dropna" description should start with a capital letter
pandas.core.groupby.DataFrameGroupBy.idxmax: Parameter "axis" description should start with a capital letter
pandas.core.groupby.DataFrameGroupBy.idxmin: Parameter "axis" description should start with a capital letter
pandas.core.groupby.DataFrameGroupBy.rank: Parameter "method" description should start with a capital letter
pandas.core.groupby.DataFrameGroupBy.rank: Parameter "na_option" description should start with a capital letter
pandas.core.groupby.DataFrameGroupBy.shift: Parameter "periods" description should start with a capital letter
pandas.core.groupby.DataFrameGroupBy.corrwith: Parameter "axis" description should start with a capital letter
pandas.core.groupby.DataFrameGroupBy.corrwith: Parameter "method" description should start with a capital letter
pandas.core.groupby.DataFrameGroupBy.boxplot: Parameter "subplots" description should start with a capital letter
pandas.core.groupby.DataFrameGroupBy.boxplot: Parameter "layout" description should start with a capital letter
pandas.io.formats.style.Styler: Parameter "precision" description should start with a capital letter
pandas.io.formats.style.Styler: Parameter "table_styles" description should start with a capital letter
pandas.io.formats.style.Styler: Parameter "uuid" description should start with a capital letter
pandas.io.formats.style.Styler: Parameter "caption" description should start with a capital letter
pandas.io.formats.style.Styler.apply: Parameter "func" description should start with a capital letter
pandas.io.formats.style.Styler.apply: Parameter "axis" description should start with a capital letter
pandas.io.formats.style.Styler.apply: Parameter "subset" description should start with a capital letter
pandas.io.formats.style.Styler.apply: Parameter "kwargs" description should start with a capital letter
pandas.io.formats.style.Styler.applymap: Parameter "func" description should start with a capital letter
pandas.io.formats.style.Styler.applymap: Parameter "subset" description should start with a capital letter
pandas.io.formats.style.Styler.applymap: Parameter "kwargs" description should start with a capital letter
pandas.io.formats.style.Styler.where: Parameter "cond" description should start with a capital letter
pandas.io.formats.style.Styler.where: Parameter "value" description should start with a capital letter
pandas.io.formats.style.Styler.where: Parameter "other" description should start with a capital letter
pandas.io.formats.style.Styler.where: Parameter "subset" description should start with a capital letter
pandas.io.formats.style.Styler.where: Parameter "kwargs" description should start with a capital letter
pandas.io.formats.style.Styler.set_properties: Parameter "subset" description should start with a capital letter
pandas.io.formats.style.Styler.set_properties: Parameter "kwargs" description should start with a capital letter
pandas.io.formats.style.Styler.highlight_max: Parameter "subset" description should start with a capital letter
pandas.io.formats.style.Styler.highlight_max: Parameter "axis" description should start with a capital letter
pandas.io.formats.style.Styler.highlight_min: Parameter "subset" description should start with a capital letter
pandas.io.formats.style.Styler.highlight_min: Parameter "axis" description should start with a capital letter
pandas.io.formats.style.Styler.background_gradient: Parameter "cmap" description should start with a capital letter
pandas.io.formats.style.Styler.background_gradient: Parameter "low, high" description should start with a capital letter
pandas.io.formats.style.Styler.background_gradient: Parameter "axis" description should start with a capital letter
pandas.io.formats.style.Styler.background_gradient: Parameter "subset" description should start with a capital letter
pandas.io.formats.style.Styler.background_gradient: Parameter "text_color_threshold" description should start with a capital letter
pandas.io.formats.style.Styler.bar: Parameter "axis" description should start with a capital letter
pandas.io.formats.style.Styler.use: Parameter "styles" description should start with a capital letter
pandas.api.extensions.ExtensionArray.argsort: Parameter "*args, **kwargs:" description should start with a capital letter
pandas.DataFrame.insert: Parameter "column" description should start with a capital letter
pandas.DataFrame.apply: Parameter "raw" description should start with a capital letter
pandas.DataFrame.pipe: Parameter "func" description should start with a capital letter
pandas.DataFrame.pipe: Parameter "args" description should start with a capital letter
pandas.DataFrame.pipe: Parameter "kwargs" description should start with a capital letter
pandas.DataFrame.corr: Parameter "method" description should start with a capital letter
pandas.DataFrame.corrwith: Parameter "axis" description should start with a capital letter
pandas.DataFrame.corrwith: Parameter "method" description should start with a capital letter
pandas.DataFrame.drop_duplicates: Parameter "keep" description should start with a capital letter
pandas.DataFrame.duplicated: Parameter "keep" description should start with a capital letter
pandas.DataFrame.idxmax: Parameter "axis" description should start with a capital letter
pandas.DataFrame.idxmin: Parameter "axis" description should start with a capital letter
pandas.DataFrame.unstack: Parameter "fill_value" description should start with a capital letter
pandas.DataFrame.plot: Parameter "kind" description should start with a capital letter
pandas.DataFrame.plot: Parameter "style" description should start with a capital letter
pandas.DataFrame.to_feather: Parameter "fname" description should start with a capital letter
pandas.DataFrame.to_msgpack: Parameter "path" description should start with a capital letter
pandas.DataFrame.to_msgpack: Parameter "append" description should start with a capital letter
pandas.DataFrame.to_msgpack: Parameter "compress" description should start with a capital letter
pandas.DataFrame.to_clipboard: Parameter "excel" description should start with a capital letter

```
