bug#32733: 26; (dired-x) `Shell Command Guessing' typo

[Eli Zaretskii]

> From: Robert Pluim <rpluim@gmail.com>
> Date: Tue, 18 Sep 2018 14:57:54 +0200
> Cc: 32733@debbugs.gnu.org
> 
> >   > > A @samp{*} in the shell command is replaced by the file name.
> >
> > How about putting that in the active voice?
> 
> I guess thatʼs possible, but it would make that sentence be very
> different in tone from the surrounding text.

Not sure what surrounding text is alluded to here, but I'd just say

  A @samp{*} in the shell command stands for the file name that
  matched the regexp.