Fix docstrings and types in documentation that appears on the website
I agree we have a mess with docstrings... Ok, I believe we've cleaned up most of the old syntax we were using for the user-facing docs! There are still a couple of `:obj:`'s and `:class:` floating around in the docstrings we don't expose that I'll track down :) Hi @polinaeterna @albertvillanova @stevhliu,  I hope you all are doing well.

Is this issue still unresolved as I am interested in it? It should be mostly fixed for the user-facing APIs, but there may be some Sphinx syntax still lurking around in the non-public APIs. Feel free to open a PR to fix those if you catch any! 🤗  Thanks for your reply @stevhliu  :)
Sure, I will try to find out the remaining and fix that.


While I was working on https://github.com/huggingface/datasets/pull/5313 I've noticed that we have a mess in how we annotate types and format args and return values in the code. And some of it is displayed in the [Reference section](https://huggingface.co/docs/datasets/package_reference/builder_classes) of the documentation on the website.
 
Would be nice someday, maybe before releasing datasets 3.0.0, to unify it......