bug#63399: 28.2; Documentation for yes-or-no-p wrong/different between docstring and lispref

[Eli Zaretskii]

> Cc: 63399@debbugs.gnu.org
> From: Michael Albinus <michael.albinus@gmx.de>
> Date: Wed, 10 May 2023 12:08:24 +0200
> 
> I guess we should pad the prompt with a trailing space, if there isn't
> any already.

No, I don't think we should.  The caller should take care of any
padding, if that is desired.  The function shouldn't second-guess
whether a space is needed or not.