DOCS: Formatting Errors pandas.TimedeltaIndex
[pandas/core/Indexes/timedeltas.py](https://github.com/pandas-dev/pandas/blob/c7462edc33e89452ae55cb52f61b23cb66e48a5b/pandas/core/indexes/timedeltas.py)

#28602 
#27977


[pandas/core/indexes/base.py](https://github.com/pandas-dev/pandas/blob/0a44feafd58f3c5576e5f4bf3d0136dcacc352f2/pandas/core/indexes/base.py)

```
python ./scripts/validate_docstrings.py pandas.TimedeltaIndex.to_series
```

```
7 Errors found:
	Summary should fit in a single line
	Parameter "index" description should start with a capital letter
	Parameter "index" description should finish with "."
	Parameter "name" description should start with a capital letter
	Parameter "name" description should finish with "."
	The first line of the Returns section should contain only the type, unless multiple values are being returned
	Return value has no description
```



[pandas/core/arrays/datetime.py](https://github.com/pandas-dev/pandas/blob/18a9e4c8ab253e83ba43767d890576186be13332/pandas/core/arrays/datetimelike.py)
```
./scripts/validate_docstrings.py pandas.TimedeltaIndex.mean
```

```
5 Errors found:
	Parameters {**kwargs, *args} not documented
	Unknown parameters {skipna}
	Parameter "skipna" description should finish with "."
	Return value has no description
	Missing description for See Also "numpy.ndarray.mean" reference
```
