Fix the markup for broadcast messages table

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

@@ -11,7 +11,8 @@
 %br.clearfix
 
 - if @broadcast_messages.any?
-  %table.table.table-responsive
+  .table-responsive
+    %table.table.b-table.gl-table
       %thead
         %tr
           %th= _('Status')
@@ -36,8 +37,7 @@
               = message.target_path
             %td
               = message.broadcast_type.capitalize
-          %td.gl-white-space-nowrap.gl-display-flex
+            %td.gl-white-space-nowrap
               = link_to sprite_icon('pencil-square', css_class: 'gl-icon'), edit_admin_broadcast_message_path(message), title: _('Edit'), class: 'btn btn-icon gl-button'
               = link_to sprite_icon('remove', css_class: 'gl-icon'), admin_broadcast_message_path(message), method: :delete, remote: true, title: _('Remove'), class: 'js-remove-tr btn btn-icon gl-button btn-danger ml-2'
-
     = paginate @broadcast_messages, theme: 'gitlab'