Merge pull request #34429 from manfontan/patch-1

Update task-tutorial-prereqs.md

Author: k8s-ci-robot

content/en/includes/task-tutorial-prereqs.md

@@ -4,5 +4,5 @@ cluster, you can create one by using
 [minikube](https://minikube.sigs.k8s.io/docs/tutorials/multi_node/)
 or you can use one of these Kubernetes playgrounds:
 
-* [Katacoda](https://www.katacoda.com/courses/kubernetes/playground)
+* [Killercoda](https://killercoda.com/playgrounds/scenario/kubernetes)
 * [Play with Kubernetes](http://labs.play-with-k8s.com/)