bug#74772: [PATCH] Consistently add wildcards for completion-pcm-leading-wildcard

[Eli Zaretskii]

> Cc: Stefan Monnier <monnier@iro.umontreal.ca>
> Date: Tue, 10 Dec 2024 12:48:23 -0500
> From:  Spencer Baugh via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
>  (defcustom completion-pcm-leading-wildcard nil
> -  "If non-nil, partial-completion completes as if there's a leading wildcard.
> +  "If non-nil, partial-completion adds a leading wildcard for each word.

The modified wording is misleading, because it says something that
doesn't really happen (as the rest of the doc string reveals).