Merge "Fix syntax in kolla-build.conf example"

etc/kolla/kolla-build.conf

@@ -48,13 +48,13 @@
 #
 # [image-name]
 # type = url
-# location: http://address/of/archive.tgz
+# location = http://address/of/archive.tgz
 #
 # [another-image-name]
 # type = git
-# location: git://address/of/repository.git
-# reference: stable  # git reference to pull, commit sha, tag or branch name
-#                    # pulls from master branch unless specified otherwise
+# location = git://address/of/repository.git
+# reference = stable  # git reference to pull, commit sha, tag or branch name
+#                     # pulls from master branch unless specified otherwise
 
 [openstack-base]
 type = git