Update GoogleCode URL

Author: lurch

docs/getting_started.rst

@@ -41,7 +41,7 @@ Prerequisites
 
 PyFilesystem requires at least **Python 2.6**. There are a few other dependencies if you want to use some of the more advanced filesystem interfaces, but for basic use all that is needed is the Python standard library.
 
-    * Boto (required for :mod:`fs.s3fs`) http://code.google.com/p/boto/
+    * Boto (required for :mod:`fs.s3fs`) https://github.com/boto/boto
     * Paramiko (required for :class:`fs.ftpfs.FTPFS`) http://www.lag.net/paramiko/
     * wxPython (required for :mod:`fs.browsewin`) http://www.wxpython.org/