Fix links

Author: aclark4life

index.html

@@ -82,13 +82,13 @@ <h3><a href=
       <p>Our documentation is <a href=
       "http://pillow.readthedocs.org">hosted on readthedocs.org</a>
       and includes <a href=
-      "http://pillow.readthedocs.org/installation.html">installation
+      "http://pillow.readthedocs.org/en/3.0.x/installation.html">installation
       instructions</a>, <a href=
-      "http://pillow.readthedocs.org/guides.html">guides</a>,
+      "http://pillow.readthedocs.org/en/3.0.x/handbook/index.html">handbook</a>,
       <a href=
-      "http://pillow.readthedocs.org/reference/index.html">API
+      "http://pillow.readthedocs.org/en/3.0.x/reference/index.html">API
       reference</a>, <a href=
-      "http://pillow.readthedocs.org/releasenotes/index.html">release
+      "http://pillow.readthedocs.org/en/3.0.x/releasenotes/index.html">release
       notes</a> and more.</p>
 
       <h3>Discussion</h3>