Update cluster-administration-overview.md

- Fixes a typo
- Fixes a dead link

docs/concepts/cluster-administration/cluster-administration-overview.md

@@ -10,14 +10,13 @@ redirect_from:
 - "/docs/tasks/administer-cluster/overview.html"
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+{:toc}
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 {% capture overview %}
 The cluster administration overview is for anyone creating or administering a Kubernetes cluster.
 It assumes some familiarity with concepts in the [User Guide](/docs/user-guide/).
 {% endcapture %}
 
-* TOC
-{:toc}
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 {% capture body %}
 ## Planning a cluster
 
@@ -62,7 +61,7 @@ If you are using a guide involving Salt, see [Configuring Kubernetes with Salt](
 
 * [Using Sysctls in a Kubernetes Cluster](/docs/concepts/cluster-administration/sysctl-cluster/) describes to an administrator how to use the `sysctl` command-line tool to set kernel parameters .
 
-* [Auditing](docs/tasks/debug-application-cluster/audit/) describes how to interact with Kubernetes' audit logs.
+* [Auditing](/docs/tasks/debug-application-cluster/audit/) describes how to interact with Kubernetes' audit logs.
 
 ### Securing the kubelet
   * [Master-Node communication](/docs/concepts/cluster-administration/master-node-communication/)