Describe the issue:

"2.Get the bucket name by entering the following command:" example in "3.6.3.4. Configuring the Image Registry Operator to use Ceph RGW storage with Red Hat OpenShift Data Foundation"
 of "Configuring registries for OpenShift Container Platform" document is showing a wrong example. Which introducing an error in following steps.

Need to replace 'bucketName' with 'objectBucketName' in below example.

Example
-----------------------------------------------------
bucket_name=$(oc get obc -n openshift-storage rgwbucket -o jsonpath='{.spec.bucketName}')

Describe the task you were trying to accomplish:
Fix document to use correct object bucket name.

Suggestions for improvement:

Document URL:
https://access.redhat.com/documentation/en-us/openshift_container_platform/4.15/html-single/registry/index#registry-configuring-registry-storage-rhodf-cephrgw_configuring-registry-storage-baremetal

Chapter/Section Number and Title:
2. Get the bucket name by entering the following command:

Product Version:
4.15

Environment Details:

Any other versions of this document that also needs this update:

Additional information: