Fix docs about using SupportStatus during remove
Fix docs about using SupportStatus during remove

Fix docs about using SupportStatus for object after
deprecation period. Also, fix several typos and
format mistakes.

Change-Id: I4d26f9977859ff845d7ff561cdd64180f5b848c4
Closes-bug: #1484868

dragorosson/heat,miguelgrinberg/heat,takeshineshiro/heat,cwolferh/heat-scratch,srznew/heat,gonzolino/heat,dims/heat,cwolferh/heat-scratch,dragorosson/heat,openstack/heat,maestro-hybrid-cloud/heat,maestro-hybrid-cloud/heat,pratikmallya/heat,dims/heat,noironetworks/heat,pratikmallya/heat,jasondunsmore/heat,noironetworks/heat,steveb/heat,jasondunsmore/heat,takeshineshiro/heat,cryptickp/heat,srznew/heat,miguelgrinberg/heat,cryptickp/heat,openstack/heat,steveb/heat,gonzolino/heat