[AIRFLOW-3382] Fix incorrect docstring in DatastoreHook (#4222)
[AIRFLOW-3382] Fix incorrect docstring in DatastoreHook (#4222)

Correct docstring in DatastoreHook
owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow