edit docstring

Author: Lingling Peng

synapseclient/models/team.py

@@ -369,7 +369,7 @@ async def get_user_membership_status_async(
 
         Arguments:
             user_id: Synapse user ID
-            team: A team's ID.
+            team: Synapse team ID
             synapse_client: If not passed in and caching was not disabled by
                 `Synapse.allow_client_caching(False)` this will use the last created
                 instance from the Synapse class constructor.