Linked explicitly to 2.x documentation

Author: rgbkrk

docs/intro/documentation.rst

@@ -6,7 +6,7 @@ Official Documentation
 
 The official Python Language and Library documentation can be found here:
 
-    - `Python 2.x <http://docs.python.org/>`_
+    - `Python 2.x <http://docs.python.org/2.7/>`_
     - `Python 3.x <http://docs.python.org/py3k/>`_