Fix links in the tasks section

This PR fixes links where the target is a redirection. The special case
is about minikube, which has been deleted recently. The dangling link
now points to `/docs/tasks/tools/` which makes no sense. This PR change
the target for `minikube` to `https://minikube.sigs.k8s.io/docs/`.

content/en/docs/tasks/tools/install-kubectl.md

@@ -525,7 +525,7 @@ compinit
 
 ## {{% heading "whatsnext" %}}
 
-* [Install Minikube](/docs/tasks/tools/install-minikube/)
+* [Install Minikube](https://minikube.sigs.k8s.io/docs/start/)
 * See the [getting started guides](/docs/setup/) for more about creating clusters.
 * [Learn how to launch and expose your application.](/docs/tasks/access-application-cluster/service-access-application-cluster/)
 * If you need access to a cluster you didn't create, see the