More detailed guidance on upgrading airflow.

Signed-off-by: merobi-hub <[email protected]>

docs-archive/apache-airflow/2.9.2/_sources/installation/upgrading.rst.txt

@@ -57,6 +57,10 @@ when you choose to upgrade airflow via their UI.
 How to upgrade
 ==============
 
+Reinstall Apache Airflow™, specifying the desired new version. For example, in the case of a 
+bootstrapped local instance, this can be accomplished easily by exporting three environment variables 
+and running a single command. For more details, see the `Quick Start` :doc:`/start`.
+
 In order to manually migrate the database you should run the ``airflow db migrate`` command in your
 environment. It can be run either in your virtual environment or in the containers that give
 you access to Airflow ``CLI`` :doc:`/howto/usage-cli` and the database.