Style warning about mentioning many people in a comment

CHANGELOG

@@ -6,6 +6,7 @@ v 8.3.0 (unreleased)
   - Trim leading and trailing whitespace of milestone and issueable titles (Jose Corcuera)
   - Add ignore whitespace change option to commit view
   - Fire update hook from GitLab
+  - Style warning about mentioning many people in a comment
 
 v 8.2.2
   - Fix 404 in redirection after removing a project (Stan Hu)

app/views/projects/_md_preview.html.haml

@@ -8,6 +8,12 @@
         %a.js-md-preview-button(href="#md-preview-holder" tabindex="-1")
           Preview
 
+  %div
+    .md-write-holder
+      = yield
+    .md.md-preview-holder.hide
+      .js-md-preview{class: (preview_class if defined?(preview_class))}
+
   - if defined?(referenced_users) && referenced_users
     %span.referenced-users.pull-left.hide
       = icon('exclamation-triangle')
@@ -16,9 +22,3 @@
         %span.js-referenced-users-count 0
         people
       to the discussion. Proceed with caution.
-
-  %div
-    .md-write-holder
-      = yield
-    .md.md-preview-holder.hide
-      .js-md-preview{class: (preview_class if defined?(preview_class))}