Merge pull request #6763 from leseb/fix-6762

ceph: fix cluster.yaml example

cluster/examples/kubernetes/ceph/cluster.yaml

@@ -96,7 +96,7 @@ spec:
   #   enabled: true
   #   periodicity: 24h # SUFFIX may be 'h' for hours or 'd' for days.
   # automate [data cleanup process](https://github.com/rook/rook/blob/master/Documentation/ceph-teardown.md#delete-the-data-on-hosts) in cluster destruction.
-  # cleanupPolicy:
+  cleanupPolicy:
     # Since cluster cleanup is destructive to data, confirmation is required.
     # To destroy all Rook data on hosts during uninstall, confirmation must be set to "yes-really-destroy-data".
     # This value should only be set when the cluster is about to be deleted. After the confirmation is set,