DOC: fix PR02 errors in docstring for pandas.io.formats.style.Styler.to_excel

[jordan-d-murphy]

All PR02 Errors resolved in the following cases:

1. scripts/validate_docstrings.py --format=actions --errors=PR02 pandas.io.formats.style.Styler.to_excel

OUTPUT:

1. scripts/validate_docstrings.py --format=actions --errors=PR02 pandas.io.formats.style.Styler.to_excel

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

1 Errors found for `pandas.io.formats.style.Styler.to_excel`:
	PR01	Parameters {'verbose', 'encoding'} not documented

• 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.

[mroeschke]

Thanks @jordan-d-murphy