Fix Providers doc (#15185)
Fix Providers doc (#15185)

`pip pip install -e /path/to/my-package` -> `pip install -e /path/to/my-package`
apache/airflow,sekikn/incubator-airflow,nathanielvarona/airflow,apache/airflow,apache/airflow,danielvdende/incubator-airflow,apache/incubator-airflow,bolkedebruin/airflow,bolkedebruin/airflow,apache/airflow,Acehaidrey/incubator-airflow,nathanielvarona/airflow,nathanielvarona/airflow,apache/incubator-airflow,apache/airflow,cfei18/incubator-airflow,cfei18/incubator-airflow,mistercrunch/airflow,Acehaidrey/incubator-airflow,cfei18/incubator-airflow,Acehaidrey/incubator-airflow,bolkedebruin/airflow,dhuang/incubator-airflow,Acehaidrey/incubator-airflow,danielvdende/incubator-airflow,danielvdende/incubator-airflow,cfei18/incubator-airflow,dhuang/incubator-airflow,cfei18/incubator-airflow,lyft/incubator-airflow,lyft/incubator-airflow,nathanielvarona/airflow,nathanielvarona/airflow,sekikn/incubator-airflow,danielvdende/incubator-airflow,sekikn/incubator-airflow,bolkedebruin/airflow,lyft/incubator-airflow,dhuang/incubator-airflow,Acehaidrey/incubator-airflow,sekikn/incubator-airflow,lyft/incubator-airflow,apache/incubator-airflow,mistercrunch/airflow,dhuang/incubator-airflow,nathanielvarona/airflow,apache/airflow,mistercrunch/airflow,danielvdende/incubator-airflow,danielvdende/incubator-airflow,cfei18/incubator-airflow,Acehaidrey/incubator-airflow,bolkedebruin/airflow,apache/incubator-airflow,mistercrunch/airflow