Apply templates to all concepts and tasks to fix double bullets in TOC (#9149)

* Apply concept template to fix double bullet issue.

* Apply concept template

* Apply templates to tasks

content/en/docs/concepts/architecture/master-node-communication.md

@@ -4,12 +4,11 @@ reviewers:
 - roberthbailey
 - liggitt
 title: Master-Node communication
+content_template: templates/concept
 weight: 20
 ---
 
-{{< toc >}}
-
-## Overview
+{{% capture overview %}}
 
 This document catalogs the communication paths between the master (really the
 apiserver) and the Kubernetes cluster. The intent is to allow users to
@@ -17,6 +16,12 @@ customize their installation to harden the network configuration such that
 the cluster can be run on an untrusted network (or on fully public IPs on a
 cloud provider).
 
+{{% /capture %}}
+
+{{< toc >}}
+
+{{% capture body %}}
+
 ## Cluster -> Master
 
 All communication paths from the cluster to the master terminate at the
@@ -91,3 +96,4 @@ connection will be encrypted, it will not provide any guarantees of integrity.
 These connections **are not currently safe** to run over untrusted and/or
 public networks.
 
+{{% /capture %}}