Update uninstall-azure-arc-data-controller.md

Add missing custom resource definitions to delete. These three *.arcdata.microsoft.com CRDs had been left after applying the current docs.

Author: Elektronenvolt

articles/azure-arc/data/uninstall-azure-arc-data-controller.md

@@ -158,7 +158,9 @@ kubectl delete crd dags.sql.arcdata.microsoft.com
 kubectl delete crd exporttasks.tasks.arcdata.microsoft.com
 kubectl delete crd monitors.arcdata.microsoft.com
 kubectl delete crd activedirectoryconnectors.arcdata.microsoft.com
-
+kubectl delete crd failovergroups.sql.arcdata.microsoft.com
+kubectl delete crd kafkas.arcdata.microsoft.com
+kubectl delete crd otelcollectors.arcdata.microsoft.com
 
 ## Delete Cluster roles and Cluster role bindings
 kubectl delete clusterrole arcdataservices-extension