Change the home-page value in setup.cfg

Change-Id: Ib0ea7b2b6271f3fb3d0818c7fa52a51682658810

Author: venkatamahesh

setup.cfg

@@ -5,7 +5,7 @@ description-file =
     README.rst
 author = OpenStack
 author-email = openstack-dev@lists.openstack.org
-home-page = http://wiki.openstack.org/OpenStackClient
+home-page = http://docs.openstack.org/developer/python-openstackclient
 classifier =
     Environment :: OpenStack
     Intended Audience :: Information Technology