DOC: Timestamp EX01 errors
Example section added for several methods in class [pd.Timestamp](https://github.com/pandas-dev/pandas/blob/1f89b82cc65f512e78b0038975425cc3d0772a05/pandas/_libs/tslibs/timestamps.pyx#L768)

- [X] xref #37875
- [ ] tests added / passed
- [X] passes `black pandas`
- [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry


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Examples added for:

- pandas.Timestamp.asm8
- pandas.Timestamp.day_of_week
- pandas.Timestamp.day_of_year
- pandas.Timestamp.days_in_month
- pandas.Timestamp.is_leap_year
- pandas.Timestamp.is_month_end
- pandas.Timestamp.is_month_start
- pandas.Timestamp.is_quarter_end
- pandas.Timestamp.is_quarter_start
- pandas.Timestamp.is_year_end
- pandas.Timestamp.is_year_start
- pandas.Timestamp.quarter
- pandas.Timestamp.tz
- pandas.Timestamp.week
- pandas.Timestamp.ceil
- pandas.Timestamp.combine
- pandas.Timestamp.day_name
- pandas.Timestamp.floor
- pandas.Timestamp.fromordinal
- pandas.Timestamp.fromtimestamp
- pandas.Timestamp.month_name
- pandas.Timestamp.normalize
- pandas.Timestamp.now
- pandas.Timestamp.replace
- pandas.Timestamp.round
- pandas.Timestamp.strftime
- pandas.Timestamp.timestamp
- pandas.Timestamp.to_numpy
- pandas.Timestamp.to_julian_date
- pandas.Timestamp.to_period
- pandas.Timestamp.to_pydatetime
- pandas.Timestamp.today
- pandas.Timestamp.tz_convert
- pandas.Timestamp.tz_localize
- pandas.Timestamp.utcfromtimestamp
- pandas.Timestamp.utcnow
- pandas.Timestamp.weekday