[DOC] Alphabetizing `docdict`

I think the original organization of docdict was great when there were limited entries but now, in my opinion, it’s getting a bit unruly and disorganized. My suggestion would be to alphabetize and document the standardized format that the argument should go first with any specific separated by and underscore, i.e. there can be trans and trans_not_none which will be next to each other alphabetically and that way it will be easy to tell which docstring (i.e. (%(color_matplotlib)) goes to which argument (i.e. color) where %(matplotlib_color) for the argument color is a bit confusing that it goes to the argument color for a function such as f(..., color=None, ...).

cc @hoechenberger @agramfort

[alexrockhill]

I didn’t realize how big doctdict was already, I think this is a bit too late. What I thought might be a fun onboarding exercise looks like the endless PR to scare away new contributors! Sorry @andylikescodes!

I wrote a script to automate it but it still took an hour of fiddling.

[alexrockhill]

Hahaha @andylikescodes said he has a good amount of previous GitHub experience so I think that might have been mostly review for him, but in general, I think that’s a great idea. There is documentation about it https://mne.tools/dev/install/contributing.html but it’s really not by example, it’s quite long and if I were a new contributor I might not know where to start/how to do a PR.