clarify confirmation text on user deletion.

app/views/admin/users/index.html.haml

@@ -97,5 +97,5 @@
                 - if user.access_locked?
                   = link_to 'Unlock', unlock_admin_user_path(user), method: :put, class: "btn btn-xs btn-success", data: { confirm: 'Are you sure?' }
                 - if user.can_be_removed?
-                  = link_to 'Destroy', [:admin, user], data: { confirm: "USER #{user.name} WILL BE REMOVED! All tickets linked to this user will also be removed! Maybe block the user instead? Are you sure?" }, method: :delete, class: "btn btn-xs btn-remove"
+                  = link_to 'Destroy', [:admin, user], data: { confirm: "USER #{user.name} WILL BE REMOVED! All issues, merge requests and groups linked to this user will also be removed! Maybe block the user instead? Are you sure?" }, method: :delete, class: "btn btn-xs btn-remove"
     = paginate @users, theme: "gitlab"