Fix a typo in documentation
Fix a typo in documentation

remove redundant 'this'

Change-Id: I8860190d882b255a3d416de685f930d2b2c0ad17

nadeemsyed/swift,nadeemsyed/swift,psachin/swift,openstack/swift,tipabu/swift,swiftstack/swift,openstack/swift,clayg/swift,notmyname/swift,openstack/swift,psachin/swift,smerritt/swift,redbo/swift,tipabu/swift,hurricanerix/swift,smerritt/swift,hurricanerix/swift,nadeemsyed/swift,notmyname/swift,notmyname/swift,matthewoliver/swift,hurricanerix/swift,matthewoliver/swift,clayg/swift,psachin/swift,redbo/swift,tipabu/swift,smerritt/swift,clayg/swift,hurricanerix/swift,notmyname/swift,smerritt/swift,clayg/swift,matthewoliver/swift,swiftstack/swift,matthewoliver/swift,swiftstack/swift,nadeemsyed/swift,psachin/swift,openstack/swift,tipabu/swift