Add example config of sql_alchemy_connect_args (#22045)
Add example config of sql_alchemy_connect_args (#22045)

I saw a few people in slack confused about how this setting is applied. After verifying this behavior for my own deployment, I'm including it in the docs.

cfei18/incubator-airflow,apache/airflow,cfei18/incubator-airflow,Acehaidrey/incubator-airflow,danielvdende/incubator-airflow,apache/airflow,nathanielvarona/airflow,nathanielvarona/airflow,danielvdende/incubator-airflow,danielvdende/incubator-airflow,cfei18/incubator-airflow,apache/airflow,Acehaidrey/incubator-airflow,lyft/incubator-airflow,danielvdende/incubator-airflow,nathanielvarona/airflow,Acehaidrey/incubator-airflow,nathanielvarona/airflow,danielvdende/incubator-airflow,Acehaidrey/incubator-airflow,nathanielvarona/airflow,cfei18/incubator-airflow,apache/airflow,danielvdende/incubator-airflow,cfei18/incubator-airflow,apache/airflow,cfei18/incubator-airflow,lyft/incubator-airflow,lyft/incubator-airflow,Acehaidrey/incubator-airflow,Acehaidrey/incubator-airflow,apache/airflow,nathanielvarona/airflow,lyft/incubator-airflow