copy&paste fixes overview

Author: maltesander

docs/modules/demos/images/argo-cd-git-ops/architecture-overview.drawio.svg

@@ -256,13 +256,11 @@ The Airflow web UI is reachable via Nodeport or easier, using a port-forward:
 
 [source,console]
 ----
-kubectl --namespace stackable-airflow port-forward service/airflow-webserver 8081:8080
+kubectl --namespace stackable-airflow port-forward service/airflow-webserver 8080:8080
 ----
 
 In your browser, go to `http://localhost:8080` and login with username `admin` and password `adminadmin`.
 
-TODO: Screenshots - start dag
-
 === Starting DAGs
 
 TODO: screenshots?