Wrong command to obtain admin username in operator docs

Section 2.6.2 of the docs instructs the user to obtain the admin username using the following command:

oc get secret system-seed -o json | jq -r .data.ADMIN_USERNAME | base64 -d

This is incorrect, as the admin username is stored with the key ADMIN_USER in the secret.
The correct command should thus be

oc get secret system-seed -o json | jq -r .data.ADMIN_USER | base64 -d