DOC: Added docstring for Series.name and corrected docstring guide
The main contribution is to add a docstring with examples for the "name" property of the Series object.  Also corrected some typos and grammatical points in the "pandas docstring guide".

The type hint gives the type as "Label" and I could not find any other reference to a custom type defined in pandas._typing which was explicitly mentioned in the docs (instead they specify "str" or "int" or somesuch), so I chose "Label (int, str or other hashable object)".
 
Further I chose "whenever displaying the Series in the interpreter" as clearer alternative to "when invoking the __repr__ method" or a similar precise statement.
Thanks @datapythonista , I considered making two separate PRs - in future I'll follow your advice! Great thanks @dan1261 