Update the compute-flavors note
Update the compute-flavors note

Admin user can modify the flavor directly, not need to delete
it and create it with same name.

Change-Id: I27ffb93b6959d2c97d99bdebafad1c21c5bdd5d6

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