docs(k8s): update tutorial

Author: bene2k1

tutorials/deploy-demo-application-kubernetes-kapsule/index.mdx

@@ -272,7 +272,7 @@ Delete the cluster to avoid unnecessary costs.
 1. Delete the cluster:
 
    ```bash
-   scw k8s cluster delete $CLUSTER_ID
+   scw k8s cluster delete $CLUSTER_ID region=pl-waw with-additional-resources=true
    ```
 
 2. Confirm the cluster is deleted: