Minor grammar changes
Minor grammar changes

Added commas where needed and made changes to some conjunctions to improve
readability and understanding.

Fixed all review suggestions.

Change-Id: I75823235d0526739aa4d72ee12eeb3303a29e9c0

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