[AIRFLOW-XXX] Update tutorial.rst (#4336)
[AIRFLOW-XXX] Update tutorial.rst (#4336)


lyft/incubator-airflow,cfei18/incubator-airflow,cfei18/incubator-airflow,mtagle/airflow,bolkedebruin/airflow,sekikn/incubator-airflow,mistercrunch/airflow,Fokko/incubator-airflow,mistercrunch/airflow,dhuang/incubator-airflow,mistercrunch/airflow,nathanielvarona/airflow,spektom/incubator-airflow,wileeam/airflow,apache/incubator-airflow,fenglu-g/incubator-airflow,wooga/airflow,Fokko/incubator-airflow,mtagle/airflow,airbnb/airflow,apache/airflow,Acehaidrey/incubator-airflow,fenglu-g/incubator-airflow,Acehaidrey/incubator-airflow,apache/airflow,bolkedebruin/airflow,apache/airflow,Acehaidrey/incubator-airflow,r39132/airflow,nathanielvarona/airflow,r39132/airflow,DinoCow/airflow,apache/incubator-airflow,jgao54/airflow,wooga/airflow,dhuang/incubator-airflow,adamhaney/airflow,bolkedebruin/airflow,artwr/airflow,spektom/incubator-airflow,cfei18/incubator-airflow,DinoCow/airflow,fenglu-g/incubator-airflow,cfei18/incubator-airflow,spektom/incubator-airflow,bolkedebruin/airflow,sekikn/incubator-airflow,bolkedebruin/airflow,apache/airflow,Fokko/incubator-airflow,airbnb/airflow,jgao54/airflow,artwr/airflow,adamhaney/airflow,mrkm4ntr/incubator-airflow,adamhaney/airflow,airbnb/airflow,dhuang/incubator-airflow,jgao54/airflow,artwr/airflow,apache/airflow,lyft/incubator-airflow,mtagle/airflow,Acehaidrey/incubator-airflow,jgao54/airflow,DinoCow/airflow,wooga/airflow,sekikn/incubator-airflow,Acehaidrey/incubator-airflow,fenglu-g/incubator-airflow,mrkm4ntr/incubator-airflow,nathanielvarona/airflow,apache/incubator-airflow,cfei18/incubator-airflow,DinoCow/airflow,apache/airflow,danielvdende/incubator-airflow,wileeam/airflow,mrkm4ntr/incubator-airflow,r39132/airflow,Fokko/incubator-airflow,mtagle/airflow,nathanielvarona/airflow,danielvdende/incubator-airflow,sekikn/incubator-airflow,artwr/airflow,lyft/incubator-airflow,dhuang/incubator-airflow,wileeam/airflow,wileeam/airflow,lyft/incubator-airflow,cfei18/incubator-airflow,nathanielvarona/airflow,mistercrunch/airflow,danielvdende/incubator-airflow,mrkm4ntr/incubator-airflow,danielvdende/incubator-airflow,nathanielvarona/airflow,apache/incubator-airflow,Acehaidrey/incubator-airflow,adamhaney/airflow,airbnb/airflow,danielvdende/incubator-airflow,r39132/airflow,wooga/airflow,spektom/incubator-airflow,danielvdende/incubator-airflow