DOC: Improve options.rst
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).

* Removed some images that now render in ipython in sphinx
* Referenced user guide section in option function docstrings
* Added more sphinx links to pandas functions and objects
* Clarified & simplified language.

The docstring changes look good.  I dont know enough about the .rst rendering to comment on the unicode files. The hosted docs have these rendering correctly (and actually looks like the screenshots are incorrect?)

https://pandas.pydata.org/pandas-docs/stable/user_guide/options.html#unicode-formatting @meeseeksdev backport 1.4.x Something went wrong ... Please have a look at my logs.