Add link to Kubernetes 'Running Automated Tasks with a CronJob' for cron job resource. (#1200)

Author: akonrath

website/docs/r/cron_job.html.markdown

@@ -12,7 +12,7 @@ description: |-
   One CronJob object is like one line of a crontab (cron table) file. It runs a job periodically on a given schedule, written in Cron format.
 
   Note: All CronJob `schedule` times are based on the timezone of the master where the job is initiated.
-  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.
+  For instructions on creating and working with cron jobs, and for an example of a spec file for a cron job, see [Kubernetes reference](https://kubernetes.io/docs/tasks/job/automated-tasks-with-cron-jobs/).
 
 ## Example Usage