locate: add pointer to files command in help

mercurial/commands.py

@@ -4178,6 +4178,8 b' def locate(ui, repo, *pats, **opts):'
     will avoid the problem of "xargs" treating single filenames that
     contain whitespace as multiple filenames.
 
+    See :hg:`help files` for a more versatile command.
+
     Returns 0 if a match is found, 1 otherwise.
     """
     end = opts.get('print0') and '\0' or '\n'