doc: allow request for TSC reviews via the GitHub UI

PR-URL: https://github.com/nodejs/node/pull/56493
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Ulises Gascón <ulisesgascongonzalez@gmail.com>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

doc/contributing/collaborator-guide.md

@@ -523,7 +523,6 @@ deprecation level of an API.
 Collaborators can opt to elevate pull requests or issues to the [TSC][].
 Do this if a pull request or issue:
 
-* Is labeled `semver-major`, or
 * Has a significant impact on the codebase, or
 * Is controversial, or
 * Is at an impasse among collaborators who are participating in the discussion.
@@ -532,6 +531,9 @@ Do this if a pull request or issue:
 [TSC][]. Do not use the GitHub UI on the right-hand side to assign to
 `@nodejs/tsc` or request a review from `@nodejs/tsc`.
 
+If a pull request is labeled `semver-major`, you can request a review from the
+`@nodejs/tsc` GitHub team.
+
 The TSC serves as the final arbiter where required.
 
 ## Landing pull requests