Fix release note markup

Change-Id: I8a9d1db4cba381e44718f663347efa8eba854a63

releasenotes/notes/docker-registry-on-seed-2eb4fb643d6fda9a.yaml

@@ -5,7 +5,7 @@ upgrade:
     ``docker-registry`` group, which defaults to include the seed. The existing
     behaviour of deploying on the first controller can be retained by removing
     the seed group from ``[docker-registry:children]`` in
-    ``$KAYOBE_CONFIG_PATH/inventory/groups` and creating a
+    ``$KAYOBE_CONFIG_PATH/inventory/groups`` and creating a
     ``[docker-registry]`` group including the name of the first controller.
   - |
     Modifies the default value of ``docker_registry_image`` variable to not use