Merge branch 'mjang-add-tier-2fa' into 'master'

Add tiers to 2fa page

See merge request gitlab-org/gitlab!57033

doc/user/profile/account/two_factor_authentication.md

@@ -5,7 +5,7 @@ group: Access
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
-# Two-factor authentication
+# Two-factor authentication **(FREE)**
 
 Two-factor authentication (2FA) provides an additional level of security to your
 GitLab account. After being enabled, in addition to supplying your username and