DOCSP-22692 Adds enableSharding line to release note (#1118)

Author: kennethdyer

source/release-notes/6.0.txt

@@ -133,6 +133,12 @@ connection object has the following new methods:
 - :method:`Mongo.getWriteConcern()` returns the :term:`write concern`
 - :method:`Mongo.setWriteConcern()` sets the :term:`write concern`
 
+Sharding
+~~~~~~~~
+
+Starting in MongoDB 6.0, the :dbcommand:`enableSharding` command is
+no longer required to shard a collection.
+
 .. _6.0-upgrade:
 
 Upgrade Procedures