Description of problem:

In chapter 4.6.2 of the OADP documentation [0] there is mentioned:
"You back up Kubernetes images, internal images, and persistent volumes (PVs) by creating a Backup custom resource (CR)."

The expression "Kubernetes images" is not correct and should state "Kubernetes resources" as mentioned in other parts of the documentation.

[0] https://docs.redhat.com/en/documentation/openshift_container_platform/4.14/html-single/backup_and_restore/index#oadp-creating-backup-cr-doc