DOCSP-23084 add reverse link (#42)

* DOCSP-23084 add reverse link

* Review feedback

Author: Dave Cuthbert

source/includes/fact-atlas-roles.rst

@@ -1,14 +1,15 @@
 The user specified in the connection string must have the
 :atlasrole:`atlasAdmin` role.
 
-To use ``mongosync`` in the reverse direction, you must `create a
-custom role </atlas/reference/api/custom-roles-create-a-role/>`__ that
-grants the following ActionTypes:
+To use ``mongosync`` in the :ref:`reverse direction <c2c-api-reverse>`,
+you must `create a custom role
+</atlas/reference/api/custom-roles-create-a-role/>`__ that grants the
+following ActionTypes:
 
 - setUserWriteBlockMode
 - bypassWriteBlockingMode
 
-The ``setUserWriteBlockMode`` and ``bypassWriteBlockingMode`` user
-actions are available starting in MongoDB 6.0. To create the custom
+The ``setUserWriteBlockMode`` and ``bypassWriteBlockingMode``
+ActionTypes are available starting in MongoDB 6.0. To create the custom
 roles, all clusters in a project must be on MongoDB 6.0 or higher.