Add broker name in Schedule docs

docs/schedules.rst

@@ -28,10 +28,11 @@ You can manage them through the :ref:`admin_page` or directly from your code wit
                             )
 
     # In case you want to use q_options
+    # Specify the broker by using the property broker_name in q_options
     schedule('math.sqrt',
              9,
              hook='hooks.print_result',
-             q_options={'timeout': 30},
+             q_options={'timeout': 30, 'broker_name': 'broker_1'},
              schedule_type=Schedule.HOURLY)
 
     # Run a schedule every 5 minutes, starting at 6 today
@@ -117,6 +118,11 @@ Reference
     :param datetime next_run: Next or first scheduled execution datetime.
     :param dict q_options: options passed to async_task for this schedule
     :param kwargs: optional keyword arguments for the scheduled function.
+    
+    .. note::
+
+        q_options does not accept the 'broker' key with a broker instance but accepts a 'broker_name' key instead. This can be used to specify the broker connection name to assign the task. If a broker with the specified name does not exist or is not running at the moment of placing the task in queue it fallbacks to the random broker/queue that handled the schedule.
+
 
 .. class:: Schedule