Description of problem:
there are some steps are not exact in doc section: https://docs.openshift.com/container-platform/4.15/hosted_control_planes/hcp-backup-restore-dr.html#hosted-etcd-non-disruptive-recovery

In section: Checking the status of a hosted cluster

1. Enter the running etcd pod that you want to check by entering the following command:
$ oc rsh -n <control_plane_namespace> -c etcd <etcd_pod_name>

updated to:

$ oc rsh -n openshift-etcd etcd <etcd_pod_name>

2. Set up the etcdctl environment by entering the following commands:

This step could be deprecated, and execute step 3 as below:

3. Print the endpoint status for each cluster member by entering the following command:
sh-4.4# etcdctl endpoint status -w table
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Regarding to setion:

Recovering an etcd member for a hosted cluster

1. If you need to confirm that the etcd member is failing, enter the following command:

$ oc get pods -l app=etcd -n <control_plane_namespace>

could be updated to:

$ oc get pods -l app=etcd -n openshift-etcd

2. Delete the persistent volume claim of the failing etcd member and the pod by entering the following command:

$ oc delete pvc/<pvc_name> pod/<etcd_pod_name> --wait=false

the pvc is not available for any etcd pods, so we may change it to another option:

$ oc delete pods etcd-2 -n openshift-etcd

and I will update the improvement item in this doc continueously

How reproducible:

    Steps to Reproduce:{code:none}
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    Actual results:{code:none}

    
    Expected results:{code:none}

    

Additional info: