[DOCS] Update Airflow integration page for 2.3+ TaskListener

When airflow 2.3+ launches, it will include a new integration method for that version onward. We should have a branch of the Airflow page ready for that release, targeted for April 14.

The Tasklistener issue on the airflow side is [here](https://github.com/apache/airflow/pull/20443)
and the Openlineage PR is [here](https://github.com/OpenLineage/OpenLineage/pull/508).