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/tasks/administer-cluster/highly-available-master.md

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 reviewers:
 - jszczepkowski
 title: Set up High-Availability Kubernetes Masters
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 ---
 
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+You can replicate Kubernetes masters in `kube-up` or `kube-down` scripts for Google Compute Engine.
+This document describes how to use kube-up/down scripts to manage highly available (HA) masters and how HA masters are implemented for use with GCE.
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 {{< toc >}}
 
-Kubernetes version 1.5 adds alpha support for replicating Kubernetes masters in `kube-up` or `kube-down` scripts for Google Compute Engine.
-This document describes how to use kube-up/down scripts to manage highly available (HA) masters and how HA masters are implemented for use with GCE.
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 ## Starting an HA-compatible cluster
 
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 This operation may be sped up by migrating etcd data directory, as described [here](https://coreos.com/etcd/docs/latest/admin_guide.html#member-migration)
 (we are considering adding support for etcd data dir migration in future).
 
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 ## Implementation notes
 
 ![ha-master-gce](/images/docs/ha-master-gce.png)
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 ## Additional reading
 
 [Automated HA master deployment - design doc](https://git.k8s.io/community/contributors/design-proposals/cluster-lifecycle/ha_master.md)
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