fixed cron job interpretation in the example (#47652)

* fixed cron job interpretation in the example

the cron job in this example runs on the intersection of 13th of every month and Friday, not the union of these conditions. If the 13th falls on any other day of the week, the job will not run.

* Update cron-jobs.md

new cron example that is more realistic

* Update cron-jobs.md

replaced cron example with a simple one

* Update content/en/docs/concepts/workloads/controllers/cron-jobs.md

Co-authored-by: Tim Bannister <[email protected]>

---------

Co-authored-by: Tim Bannister <[email protected]>

Author: lintopaul

content/en/docs/concepts/workloads/controllers/cron-jobs.md

@@ -65,7 +65,7 @@ The `.spec.schedule` field is required. The value of that field follows the [Cro
 # * * * * *
 ```
 
-For example, `0 0 13 * 5` states that the task must be started every Friday at midnight, as well as on the 13th of each month at midnight.
+For example, `0 3 * * 1` means this task is scheduled to run weekly on a Monday at 3 AM.
 
 The format also includes extended "Vixie cron" step values. As explained in the
 [FreeBSD manual](https://www.freebsd.org/cgi/man.cgi?crontab%285%29):