missing colons, thanks tianon

library/centos

@@ -24,5 +24,5 @@ centos6.6: git://github.com/CentOS/sig-cloud-instance-images@72a13cc9b85c6c50053
 6.6: git://github.com/CentOS/sig-cloud-instance-images@72a13cc9b85c6c500531d5f1e1dd86b8308a1cda docker
 
 # 5.11
-centos5.11 git://github.com/CentOS/sig-cloud-instance-images@e0f32850b2893baaa25efa9d98585f4c92aa83fb docker
-5.11 git://github.com/CentOS/sig-cloud-instance-images@e0f32850b2893baaa25efa9d98585f4c92aa83fb docker
+centos5.11: git://github.com/CentOS/sig-cloud-instance-images@e0f32850b2893baaa25efa9d98585f4c92aa83fb docker
+5.11: git://github.com/CentOS/sig-cloud-instance-images@e0f32850b2893baaa25efa9d98585f4c92aa83fb docker