#4500: Split out tasks in cron jobs docs (#8337)

* first attempt

* Skipping these sections

* cleanup and style

* style

* move schedule info to schedule section

* link to example

content/en/docs/tasks/job/cronjob.yaml

@@ -0,0 +1,18 @@
+apiVersion: batch/v1beta1
+kind: CronJob
+metadata:
+  name: hello
+spec:
+  schedule: "*/1 * * * *"
+  jobTemplate:
+    spec:
+      template:
+        spec:
+          containers:
+          - name: hello
+            image: busybox
+            args:
+            - /bin/sh
+            - -c
+            - date; echo Hello from the Kubernetes cluster
+          restartPolicy: OnFailure