Fix "Invalid JSON configuration, must be a dict" (#16648)
Fix "Invalid JSON configuration, must be a dict" (#16648)

Wrong variable name used
apache/airflow,lyft/incubator-airflow,nathanielvarona/airflow,bolkedebruin/airflow,apache/airflow,bolkedebruin/airflow,Acehaidrey/incubator-airflow,lyft/incubator-airflow,bolkedebruin/airflow,apache/incubator-airflow,Acehaidrey/incubator-airflow,lyft/incubator-airflow,lyft/incubator-airflow,nathanielvarona/airflow,dhuang/incubator-airflow,dhuang/incubator-airflow,cfei18/incubator-airflow,Acehaidrey/incubator-airflow,apache/airflow,cfei18/incubator-airflow,apache/incubator-airflow,cfei18/incubator-airflow,danielvdende/incubator-airflow,dhuang/incubator-airflow,nathanielvarona/airflow,danielvdende/incubator-airflow,bolkedebruin/airflow,danielvdende/incubator-airflow,Acehaidrey/incubator-airflow,nathanielvarona/airflow,apache/incubator-airflow,Acehaidrey/incubator-airflow,nathanielvarona/airflow,mistercrunch/airflow,danielvdende/incubator-airflow,danielvdende/incubator-airflow,Acehaidrey/incubator-airflow,nathanielvarona/airflow,dhuang/incubator-airflow,cfei18/incubator-airflow,mistercrunch/airflow,mistercrunch/airflow,cfei18/incubator-airflow,apache/incubator-airflow,bolkedebruin/airflow,apache/airflow,apache/airflow,apache/airflow,danielvdende/incubator-airflow,mistercrunch/airflow,cfei18/incubator-airflow