Update airflow_heartbeat_detection.py

dags/airflow/airflow_heartbeat_detection.py

@@ -28,7 +28,7 @@ def heartbeat_alarm(**kwargs):
     logging.info('start heartbeat alarm')
     title = 'airflow_heartbeat_detection'
     msg = '\n- I am airflow, I will notify you once every two hours.\
-    If I have not notified after 30 minutes, I have already hanged up.SOS...'
+    If I have not notified after one hours, I have already hanged up.SOS...'
     message = '''I am airflow, I am still alive.!!!
     \n#### DAG_ID:  %s 
     \n#### TASKID:  %s