Fixed broken link in README

The old link was broken.
I'm not sure which page that link was supposed to point to. I'm just guessing this is the correct link.

README.rst

@@ -17,7 +17,7 @@ This project provides a set of Python packages that make it easy to
 access Management (Virtual Machines, ...) or Runtime (ServiceBus using HTTP, Batch, Monitor) components of
 `Microsoft Azure <https://azure.microsoft.com/>`_
 Complete feature list of this repo and where to find Python packages not in this repo can be found on our 
-`Azure SDK for Python features chapter on ReadTheDocs <http://azure-sdk-for-python.readthedocs.io/en/latest/index.html#features>`__.
+`Azure SDK for Python features chapter on ReadTheDocs <https://docs.microsoft.com/en-us/python/api/overview/azure/?view=azure-python>`__.
 
 The SDK supports Python 2.7, 3.3, 3.4, 3.5 and 3.6.