DOCS-14469: Address rename behaviour

Author: npentrel

source/reference/method/db.collection.renameCollection.txt

@@ -68,7 +68,7 @@ warnings and messages.
    :dbcommand:`renameCollection` command create an
    :ref:`change-event-invalidate` for any existing
    :doc:`/changeStreams` opened on the source or target collection.
-   
+
 - The method has the following limitations:
 
   - :method:`db.collection.renameCollection()` cannot move a collection
@@ -83,6 +83,9 @@ warnings and messages.
   - :method:`db.collection.renameCollection()` is not supported on
     :term:`time series collections <time series collection>`.
 
+  - You cannot rename a collection to itself. If you try to rename a
+    collection to itself an ``IllegalOperation`` error is thrown.
+
 Resource Locking in Sharded Clusters
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~