DOC/CLN: Clean/Fix documentation for Window module
- xref #31661
- xref #28792

- Added '.' before dataframe/series reference to fix missing link problem. Don't know if it's the best approach.
- Changed base template that is used by some functions to return better See Also section. Hope it's ok.


- Also question about Window class. It doesn't has its counterpart from Series/DF modules, its doc containing examples from Rolling part and there're only 4 functions. Is it internal base class for all windows and maybe shoul be excluded from docs or is it used somewhere maybe for creating custom windows?