[www] add redirect for Mitaka Config Reference
[www] add redirect for Mitaka Config Reference

Change-Id: I7a0030c91670f5b55d762bf724930b7c46d4f4fb
Depends-On: I5d53375ebed98e3bd7249d235fa514edb040e9e5

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals