[Doc]: quiver_doc etc leads to documentation of the documentation string

[oscargus]

Documentation Link

https://matplotlib.org/3.6.2/api/_as_gen/matplotlib.quiver.Quiver.html#matplotlib.quiver.Quiver.quiver_doc

Problem

I guess we do not really want this. Is it for some backward compatibility, some issue if not there, a side effect of some other change, or just a mistake?

Suggested improvement

Option 1: Do not define quiver_doc, but rely on _quiver_doc (same goes for barbs_doc https://matplotlib.org/3.6.2/api/_as_gen/matplotlib.quiver.Barbs.html#matplotlib.quiver.Barbs.barbs_doc ).

Option 2: update the rst to skip these.

[rcomer]

Yikes!

[QuLogic]

I don't think there's much argument for these being public; they likely should be deprecated and removed.