DOC: Fixed inconsistencies in pandas.DataFrame.pivot_table docstring parameter descriptions
- [x] closes #53351
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).

Updated the docstring for `pandas.DataFrame.pivot_table` as described in issue #53351
I see that the "Test (not single_cpu)" is failing but I am unsure how the changes I made to the `pivot_table` docstring could have resulted in the test failure. If you could provide any direction about anything I could do on my end to rectify this, I will update it accordingly. Thanks! Thanks @tpaxman 