(dired-show-file-type): Doc fixup (bug#8818).

lisp/ChangeLog

 2011-07-01  Lars Magne Ingebrigtsen  <larsi@gnus.org>
 
 	* dired-aux.el (dired-diff): Doc fixup (bug#8816).
+	(dired-show-file-type): Doc fixup (bug#8818).
 
 	* dired.el (dired-mode): Fix up the doc string as suggested by
 	Drew Adams (bug#8817).

lisp/dired-aux.el

@@ -2493,8 +2493,9 @@ with the command \\[tags-loop-continue]."
 ;;;###autoload
 (defun dired-show-file-type (file &optional deref-symlinks)
   "Print the type of FILE, according to the `file' command.
-If FILE is a symbolic link and the optional argument DEREF-SYMLINKS is
-true then the type of the file linked to by FILE is printed instead."
+If you give a prefix to this command, and FILE is a symbolic
+link, then the type of the file linked to by FILE is printed
+instead."
   (interactive (list (dired-get-filename t) current-prefix-arg))
   (let (process-file-side-effects)
     (with-temp-buffer