fix(changelog): Fix rst syntax for changelog

Part-of: <https://dev.funkwhale.audio/funkwhale/funkwhale/-/merge_requests/2435>

CHANGELOG

@@ -47,11 +47,13 @@ Update instructions:
   2. Stop your containers using the **docker-compose** syntax.
 
   .. code-block:: sh
+
      sudo docker-compose down
 
   3. Bring the containers back up using the **docker compose** syntax.
 
   .. code-block:: sh
+
      sudo docker compose up -d
 
   After this you can continue to use the **docker compose** syntax for all Docker management tasks.