message: docs: fix and refine COMMITTER.md
  mention correct merge label
  remove the non inclusive "**just** read the instructions" content
  link to CODEOWNERS file
  PR Close
diff: # Pushing changes into the Angular tree
  Please see [Using git with Angular repositories](https://docs.google.com/document/d/1h8nijFSaa1jG_UE8v4WP7glh5qOUXnYtAtJh_gwOQHI/edit)
  -for details about how we maintain a linear commit history, and the rules for committing.
  +for details about how we maintain a linear commit history and the rules for committing.
  -As a contributor, just read the instructions in [CONTRIBUTING.md](../CONTRIBUTING.md) and send a pull request.
  -Someone with committer access will do the rest.
  +As a contributor, see the instructions in [CONTRIBUTING.md](../CONTRIBUTING.md).
  # Change approvals
  -Change approvals in our monorepo are managed via [GitHub CODEOWNERS](https://help.github.com/articles/about-codeowners/) and are configured via the `.github/CODEOWNERS` file.
  -
  +Change approvals in our monorepo are managed via [GitHub CODEOWNERS](https://help.github.com/articles/about-codeowners/) and are configured via the [`.github/CODEOWNERS`](../.github/CODEOWNERS) file.
  # Merging
  -Once a change has all the approvals either the last approver or the PR author (if PR author has the project collaborator status) should mark the PR with `PR: merge` as well as `PR target: *` labels.
  -This signals to the caretaker that the PR should be merged. See [merge instructions](../CARETAKER.md).
  +Once a change has all of the required approvals, either the last approver or the PR author (if PR author has the project collaborator status)
  +should mark the PR with the `PR action: merge` label and the correct [target label](https://github.com/angular/angular/blob/master/docs/TRIAGE_AND_LABELS.md#pr-target).
  +This signals to the caretaker that the PR should be merged. See [merge instructions](CARETAKER.md).
  # Who is the Caretaker?
  