Fix docs

airflow/settings.py

@@ -14,6 +14,7 @@ _____  |__|_______/ ____\  |   ______  _  __
      \/"""
 
 
+AIRFLOW_HOME = conf.get('core', 'AIRFLOW_HOME')
 BASE_FOLDER = conf.get('core', 'BASE_FOLDER')
 BASE_LOG_URL = "/admin/airflow/log"
 SQL_ALCHEMY_CONN = conf.get('core', 'SQL_ALCHEMY_CONN')