Merge branch '4.4'

* 4.4:
  Minor fixes

Author: javiereguiluz

reference/configuration/framework.rst

@@ -2629,7 +2629,7 @@ A list of lock stores to be created by the framework extension.
 
     .. code-block:: yaml
 
-        # config/packages/lock.yml
+        # config/packages/lock.yaml
         framework:
             # these are all the supported lock stores
             lock: ~