Fix typos in comments
Fix typos in comments

Change-Id: I4f98d447bd2ddd8eeb2f4da66d069bd7d6f00dc6

nadeemsyed/swift,aerwin3/swift,openstack/swift,prashanthpai/swift,psachin/swift,williamthegrey/swift,matthewoliver/swift,hurricanerix/swift,matthewoliver/swift,smerritt/swift,swiftstack/swift,tipabu/swift,matthewoliver/swift,nadeemsyed/swift,smerritt/swift,hurricanerix/swift,psachin/swift,matthewoliver/swift,psachin/swift,clayg/swift,revoer/keystone-8.0.0,openstack/swift,nadeemsyed/swift,clayg/swift,prashanthpai/swift,larsbutler/swift,hurricanerix/swift,clayg/swift,clayg/swift,revoer/keystone-8.0.0,openstack/swift,smerritt/swift,notmyname/swift,nadeemsyed/swift,tipabu/swift,hurricanerix/swift,swiftstack/swift,openstack/swift,tipabu/swift,swiftstack/swift,smerritt/swift,notmyname/swift,notmyname/swift,williamthegrey/swift,aerwin3/swift,redbo/swift,redbo/swift,tipabu/swift,psachin/swift,notmyname/swift,larsbutler/swift