Add tier to header

Add Free tier badge to page header.

doc/user/group/index.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
 ---
 
-# Groups
+# Groups **(FREE)**
 
 In GitLab, you can put related projects together in a group.
 
@@ -479,7 +479,7 @@ username, you can create a new group and transfer projects to it.
 
 You can change settings that are specific to repositories in your group.
 
-#### Custom initial branch name **(FREE)**
+#### Custom initial branch name
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/43290) in GitLab 13.6.