Update GoogleCode URL

Author: lurch

fs/tests/test_ftpfs.py

@@ -21,7 +21,7 @@
     from pyftpdlib.servers import FTPServer
 except ImportError:
     if not PY3:
-        raise ImportError("Requires pyftpdlib <http://code.google.com/p/pyftpdlib/>")
+        raise ImportError("Requires pyftpdlib <https://github.com/giampaolo/pyftpdlib>")
 
 from fs.path import *