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/workloads/controllers/cron-jobs.md

@@ -4,12 +4,11 @@ reviewers:
 - soltysh
 - janetkuo
 title: CronJob
+content_template: templates/concept
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-## What is a cron job?
+{{% capture overview %}}
 
 A _Cron Job_ manages time based [Jobs](/docs/concepts/workloads/controllers/jobs-run-to-completion/), namely:
 
@@ -21,6 +20,12 @@ on a given schedule, written in [Cron](https://en.wikipedia.org/wiki/Cron) forma
 
 For instructions on creating and working with cron jobs, and for an example of a spec file for a cron job, see [Running automated tasks with cron jobs](/docs/tasks/job/automated-tasks-with-cron-jobs).
 
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+{{< toc >}}
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 ## Cron Job Limitations
 
 A cron job creates a job object _about_ once per execution time of its schedule. We say "about" because there
@@ -43,3 +48,5 @@ starting at all.
 
 The Cronjob is only responsible for creating Jobs that match its schedule, and
 the Job in turn is responsible for the management of the Pods it represents.
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+{{% /capture %}}