bug#64425: [PATCH] Mention minibuffer-next-completion in completion-help

[Eli Zaretskii]

> From: sbaugh@catern.com
> Date: Sun, 02 Jul 2023 19:14:06 +0000 (UTC)
> Cc: 64425@debbugs.gnu.org
> 
> > Isn't this text too long for a single screen line?  If so, it will
> > cause an annoying "jumping" of the mode line.
> 
> Good point, how about this wording:

OK, I think.

> > Also, what about updating the documentation?
> 
> All the other relevant documentation that I know about has already been
> updated to mention minibuffer-{next,previous,choose}-completion.

I don't see the additional bindings documented anywhere.
And neither can I find any reference to
minibuffer-{next,previous,choose}-completion.  What did I miss?