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


- [x] xref https://github.com/pandas-dev/pandas/issues/57111
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [ ] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) 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.

Thanks @jordan-d-murphy 