DOC: fix PR02 errors in docstrings - pandas.core.window.rolling.Rolling.quantile, pandas.core.window.expanding.Expanding.quantile

[jordan-d-murphy]

All PR02 Errors resolved in the following cases:

1. scripts/validate_docstrings.py --format=actions --errors=PR02 pandas.core.window.rolling.Rolling.quantile
2. scripts/validate_docstrings.py --format=actions --errors=PR02 pandas.core.window.expanding.Expanding.quantile

OUTPUT:

1. scripts/validate_docstrings.py --format=actions --errors=PR02 pandas.core.window.rolling.Rolling.quantile

################################################################################
################################## Validation ##################################
################################################################################

5 Errors found for `pandas.core.window.rolling.Rolling.quantile`:
	ES01	No extended summary found
	SA05	pandas.Series.rolling in `See Also` section does not need `pandas` prefix, use Series.rolling instead.
	SA05	pandas.DataFrame.rolling in `See Also` section does not need `pandas` prefix, use DataFrame.rolling instead.
	SA05	pandas.Series.quantile in `See Also` section does not need `pandas` prefix, use Series.quantile instead.
	SA05	pandas.DataFrame.quantile in `See Also` section does not need `pandas` prefix, use DataFrame.quantile instead.

2. scripts/validate_docstrings.py --format=actions --errors=PR02 pandas.core.window.expanding.Expanding.quantile

################################################################################
################################## Validation ##################################
################################################################################

5 Errors found for `pandas.core.window.expanding.Expanding.quantile`:
	ES01	No extended summary found
	SA05	pandas.Series.expanding in `See Also` section does not need `pandas` prefix, use Series.expanding instead.
	SA05	pandas.DataFrame.expanding in `See Also` section does not need `pandas` prefix, use DataFrame.expanding instead.
	SA05	pandas.Series.quantile in `See Also` section does not need `pandas` prefix, use Series.quantile instead.
	SA05	pandas.DataFrame.quantile in `See Also` section does not need `pandas` prefix, use DataFrame.quantile instead.

• xref DOC: fix PR02 errors in docstrings #57111
• Tests added and passed if fixing a bug or adding a new feature
• All code checks passed.
• Added type annotations to new arguments/methods/functions.
• Added an entry in the latest doc/source/whatsnew/vX.X.X.rst file if fixing a bug or adding a new feature.

[datapythonista]

Thanks @jordan-d-murphy, nice update