Update links to avoid redirect.s (#5829)

docs/tasks/administer-cluster/namespaces.md

@@ -334,7 +334,7 @@ Use cases include:
 
 ## Understanding namespaces and DNS
 
-When you create a [Service](/docs/concepts/services-networking/service/), it creates a corresponding [DNS entry](/docs/admin/dns).
+When you create a [Service](/docs/concepts/services-networking/service/), it creates a corresponding [DNS entry](/docs/concepts/services-networking/dns-pod-service/).
 This entry is of the form `<service-name>.<namespace-name>.svc.cluster.local`, which means
 that if a container just uses `<service-name>` it will resolve to the service which
 is local to a namespace.  This is useful for using the same configuration across

docs/tasks/extend-kubectl/kubectl-plugins.md

@@ -9,7 +9,7 @@ description: With kubectl plugins, you can extend the functionality of the kubec
 
 {% include feature-state-alpha.md %}
 
-This guide shows you how to install and write extensions for [kubectl](/docs/user-guide/kubectl). Usually called *plugins* or *binary extensions*, this feature allows you to extend the default set of commands available in `kubectl` by adding new subcommands to perform new tasks and extend the set of features available in the main distribution of `kubectl`.
+This guide shows you how to install and write extensions for [kubectl](/docs/user-guide/kubectl/). Usually called *plugins* or *binary extensions*, this feature allows you to extend the default set of commands available in `kubectl` by adding new subcommands to perform new tasks and extend the set of features available in the main distribution of `kubectl`.
 
 {% endcapture %}
 

docs/tasks/tools/install-kubectl.md

@@ -6,7 +6,7 @@ title: Install and Set Up kubectl
 ---
 
 {% capture overview %}
-Use the Kubernetes command-line tool, [kubectl](/docs/user-guide/kubectl), to deploy and manage applications on Kubernetes. Using kubectl, you can inspect cluster resources; create, delete, and update components; and look at your new cluster and bring up example apps.
+Use the Kubernetes command-line tool, [kubectl](/docs/user-guide/kubectl/), to deploy and manage applications on Kubernetes. Using kubectl, you can inspect cluster resources; create, delete, and update components; and look at your new cluster and bring up example apps.
 {% endcapture %}
 
 {% capture prerequisites %}