Update references to the kubelet security files

This commit updates all the existing references to the files move in the previous commit.

content/en/docs/tasks/administer-cluster/securing-a-cluster.md

@@ -13,15 +13,10 @@ content_type: task
 This document covers topics related to protecting a cluster from accidental or malicious access
 and provides recommendations on overall security.
 
-
-
 ## {{% heading "prerequisites" %}}
 
-
 * {{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
 
-
-
 <!-- steps -->
 
 ## Controlling access to the Kubernetes API
@@ -77,11 +72,13 @@ Consult the [authorization reference section](/docs/reference/access-authn-authz
 
 ## Controlling access to the Kubelet
 
-Kubelets expose HTTPS endpoints which grant powerful control over the node and containers. By default Kubelets allow unauthenticated access to this API.
+Kubelets expose HTTPS endpoints which grant powerful control over the node and containers.
+By default Kubelets allow unauthenticated access to this API.
 
 Production clusters should enable Kubelet authentication and authorization.
 
-Consult the [Kubelet authentication/authorization reference](/docs/reference/command-line-tools-reference/kubelet-authentication-authorization) for more information.
+Consult the [Kubelet authentication/authorization reference](/docs/reference/access-authn-authz/kubelet-authn-authz/)
+for more information.
 
 ## Controlling the capabilities of a workload or user at runtime