[AIRFLOW-XXX] Update Updating instructions for changes in 1.10.1
[AIRFLOW-XXX] Update Updating instructions for changes in 1.10.1

A cherry-pick went awry causing some thing to be duplicated

owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow