[admin-guide] Fix rst mark-ups for cross-project
[admin-guide] Fix rst mark-ups for cross-project

Change-Id: Ibf7c978a3b59c1b1a76d6b2c0b29a97bf2eaaf67

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