Just a tiny doc fix for a Sphinx warning
Just a tiny doc fix for a Sphinx warning

Change-Id: Iede31212065eafb94fd29a63103e1e73e2de770d

dpgoetz/swift,orion/swift-config,wenhuizhang/swift,openstack/swift,clayg/swift,dencaval/swift,tsli/test,levythu/swift,daasbank/swift,matthewoliver/swift,Seagate/swift,notmyname/swift,Khushbu27/Tutorial,NeCTAR-RC/swift,xiaoguoai/ec-dev-swift,mjzmjz/swift,williamthegrey/swift,openstack/swift,redbo/swift,Akanoa/swift,zackmdavis/swift,bkolli/swift,larsbutler/swift,daasbank/swift,rackerlabs/swift,tipabu/swift,levythu/swift,maginatics/swift,redhat-openstack/swift,Em-Pan/swift,hbhdytf/mac2,mjwtom/swift,mjzmjz/swift,nadeemsyed/swift,aerwin3/swift,bouncestorage/swift,openstack/swift,bkolli/swift,notmyname/swift,maginatics/swift,hbhdytf/mac2,thiagodasilva/swift,matthewoliver/swift,hurricanerix/swift,smerritt/swift,AfonsoFGarcia/swift,eatbyte/Swift,Khushbu27/Tutorial,psachin/swift,NeCTAR-RC/swift,swiftstack/swift,bradleypj823/swift,swiftstack/swift,hurricanerix/swift,hbhdytf/mac,rackerlabs/swift,bouncestorage/swift,AfonsoFGarcia/swift,zackmdavis/swift,orion/swift-config,Akanoa/swift,bradleypj823/swift,hbhdytf/mac2,nadeemsyed/swift,clayg/swift,dencaval/swift,shibaniahegde/OpenStak_swift,smerritt/swift,tipabu/swift,citrix-openstack-build/swift,nadeemsyed/swift,JioCloud/swift,hbhdytf/mac2,sarvesh-ranjan/swift,mjwtom/swift,clayg/swift,notmyname/swift,psachin/swift,citrix-openstack-build/swift,hbhdytf/mac,scality/ScalitySproxydSwift,revoer/keystone-8.0.0,notmyname/swift,anishnarang/gswift,psachin/swift,openstack/swift,xiaoguoai/ec-dev-swift,citrix-openstack/build-swift,prashanthpai/swift,williamthegrey/swift,tipabu/swift,dpgoetz/swift,psachin/swift,thiagodasilva/swift,IPVL/swift-kilo,gold3bear/swift,redbo/swift,takeshineshiro/swift,matthewoliver/swift,tsli/test,iostackproject/IO-Bandwidth-Differentiation,smerritt/swift,shibaniahegde/OpenStak_swift,anishnarang/gswift,nadeemsyed/swift,matthewoliver/swift,wenhuizhang/swift,eatbyte/Swift,takeshineshiro/swift,prashanthpai/swift,tipabu/swift,JioCloud/swift,hurricanerix/swift,Seagate/swift,revoer/keystone-8.0.0,aerwin3/swift,smerritt/swift,swiftstack/swift,clayg/swift,scality/ScalitySproxydSwift,sarvesh-ranjan/swift,citrix-openstack/build-swift,gold3bear/swift,hurricanerix/swift,redhat-openstack/swift,IPVL/swift-kilo,iostackproject/IO-Bandwidth-Differentiation,larsbutler/swift,Em-Pan/swift