DOCS-13426 clarify startBalancer for activeWindow

Author: andf-mongodb

source/includes/steps-schedule-balancer-window.yaml

@@ -63,13 +63,12 @@ action:
       server replica set.
   - pre: |
       .. note::
-        The balancer window must be sufficient to *complete* the migration
-        of all data inserted during the day.
 
-        As data insert rates can change based on activity and usage
-        patterns, it is important to ensure that the balancing window you
-        select will be sufficient to support the needs of your deployment.
+         The balancer window must be sufficient to *complete* the
+         migration of all data inserted during the day.
 
-        Do not use the :method:`sh.startBalancer()` method when you have set an
-        ``activeWindow``.
-...      
+         As data insert rates can change based on activity and usage
+         patterns, it is important to ensure that the balancing window
+         you select will be sufficient to support the needs of your
+         deployment.
+...