Clarify that all repositories will be added

Signed-off-by: David Svantesson <davidsvantesson@gmail.com>

options/locale/locale_en-US.ini

@@ -1545,7 +1545,7 @@ teams.add_duplicate_users = User is already a team member.
 teams.repos.none = No repositories could be accessed by this team.
 teams.members.none = No members on this team.
 teams.all_repositories = All repositories
-teams.all_repositories_helper = Team has access to all repositories.
+teams.all_repositories_helper = Team has access to all repositories. Note that setting this will add all existing repositories to the team.
 teams.all_repositories_read_permission_desc = This team grants <strong>Read</strong> access to <strong>all repositories</strong>: members can view and clone repositories.
 teams.all_repositories_write_permission_desc = This team grants <strong>Write</strong> access to <strong>all repositories</strong>: members can read from and push to repositories.
 teams.all_repositories_admin_permission_desc = This team grants <strong>Admin</strong> access to <strong>all repositories</strong>: members can read from, push to and add collaborators to repositories.