DOCS-16278 Mongos port range release notes (#5115)

* DOCS-16278 update release notes

* DOCS-16278 fix build error

Author: jocelyn-mendez1

source/release-notes/7.1.txt

@@ -116,6 +116,12 @@ Query with Partial Shard Key
 Starting in MongoDB 7.1, :dbcommand:`findAndModify` and :method:`~db.collection.deleteOne()` 
 can use a partial shard key to query on a sharded collection.
 
+mongos Port Range
+~~~~~~~~~~~~~~~~~
+
+Starting in MongoDB 7.1, :binary:`~bin.mongos` accepts :option:`--port <mongos --port>` values 
+from [0, 65535]. For more information, see :option:`--port <mongos --port>`. 
+
 ``serverStatus`` Output Change 
 ------------------------------