Fix HTML warnings on HTML doc

Some cros-references were broken. This pathset fixes them.

Change-Id: Iddd5df6cffb85258582c5571ce541a27467bea35
Closes-Bug: #1522034

watcher/applier/actions/base.py

@@ -17,19 +17,6 @@
 # limitations under the License.
 #
 
-"""
-A :ref:`Primitive <primitive_definition>` is the component that carries out a
-certain type of atomic :ref:`Actions <action_definition>` on a given
-:ref:`Managed resource <managed_resource_definition>` (nova, swift, neutron,
-glance,..). A :ref:`Primitive <primitive_definition>` is a part of the
-:ref:`Watcher Applier <watcher_applier_definition>` module.
-
-For example, there can be a :ref:`Primitive <primitive_definition>` which is
-responsible for creating a snapshot of a given instance on a Nova compute node.
-This :ref:`Primitive <primitive_definition>` knows exactly how to send
-the appropriate commands to Nova for this type of
-:ref:`Actions <action_definition>`.
-"""
 
 import abc