Link to local copy of cliff and stevedore docs
Link to local copy of cliff and stevedore docs

We used to host documentation for cliff and stevedore on
readthedocs.org, but have updated the publishing jobs so that the docs
are hosted on docs.openstack.org with the other projects. This change
updates the links to the documentation on the main page listing all of
the projects.

Change-Id: Ibe5f01c6fee57353fcd8cd187e6894247ff88a56

AlekhyaMallina-Vedams/openstack-manuals,potsmaster/openstack-manuals,Akasurde/openstack-manuals,kairoaraujo/openstack-manuals,potsmaster/openstack-manuals,gongysh2004/openstack-manual,kairoaraujo/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,saeki-masaki/openstack-manuals,Akasurde/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,saeki-masaki/openstack-manuals,gongysh2004/openstack-manual,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals