Follow-up from "Rename the Agent on the GitLab UI"

The following discussion from !74981 (merged) should be addressed:

• @marcia started a discussion: (+10 comments)

  Then we can link the question to https://docs.gitlab.com/ee/user/clusters/agent/install/index.html#create-an-agent-record-in-gitlab. In a follow-up, we can update the docs heading from Create an Agent record in GitLab to Register the agent with GitLab (and we'll have to come back here to update the anchor, but no biggie).