Description of problem:

When adding a CSI driver several areas in the storage docs need to be updated. For IBM Power Virtual Server Block CSI Driver Operator, this one is completed:

• Supported CSI drivers: https://access.redhat.com/documentation/en-us/openshift_container_platform/4.13/html/storage/using-container-storage-interface-csi#csi-drivers-supported_persistent-storage-csi 

The following spots need to be updated:

• Types of PVs:https://access.redhat.com/documentation/en-us/openshift_container_platform/4.13/html/storage/understanding-persistent-storage#types-of-persistent-volumes_understanding-persistent-storage
• Access modes: https://access.redhat.com/documentation/en-us/openshift_container_platform/4.13/html/storage/understanding-persistent-storage#pv-access-modes_understanding-persistent-storage
• Mount options: https://access.redhat.com/documentation/en-us/openshift_container_platform/4.13/html/storage/understanding-persistent-storage#pv-mount-options_understanding-persistent-storage
• Drivers supporting dynamic provisioning: https://access.redhat.com/documentation/en-us/openshift_container_platform/4.13/html/storage/dynamic-provisioning#available-plug-ins_dynamic-provisioning

Version-Release number of selected component (if applicable):

4.13

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