DOC: Deprecation of level keyword

[amotzop]

Pandas version checks

• I have checked that the issue still exists on the latest versions of the docs on main here

Location of the documentation

https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.all.html
https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.any.html
https://pandas.pydata.org/docs/reference/api/pandas.Series.all.html
https://pandas.pydata.org/docs/reference/api/pandas.Series.any.html

Documentation problem

It seems that the level keyword in the all/any methods of Series/Dataframe are deprecated (using them raises a FutureWarning), but don't appear to be deprecated in the documentation.

Suggested fix for documentation

Add a deprecation warning comment for the level keyword in the relevant documentation.

[phofl]

They are missing everywhere. Thanks for pointing this out