Fix PyDoc.

Review URL: http://codereview.chromium.org/387005

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@31592 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/gcl.py b/gcl.py
index 49b2137..c8a1be7 100755
--- a/gcl.py
+++ b/gcl.py
@@ -2,9 +2,9 @@
 # Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
-#
-# Wrapper script around Rietveld's upload.py that groups files into
-# changelists.
+
+"""Wrapper script around Rietveld's upload.py that groups files into
+changelists."""
 
 import getpass
 import os