makes message plural for multiple MRs and removes from loop. Duh.

app/assets/stylesheets/framework/lists.scss

@@ -74,7 +74,7 @@
 /** light list with border-bottom between li **/
-ul.bordered-list {
+ul.bordered-list, ul.unstyled-list {
   @include basic-list;
   &.top-list {
@@ -88,6 +88,10 @@ ul.bordered-list {
   }
 }
+ul.unstyled-list > li {
+  border-bottom: none;
+}
+
 ul.task-list {
   li.task-list-item {
     list-style-type: none;

app/views/projects/issues/_closed_by_box.html.haml

 .issue-closed-by-widget.second-block
-  When this merge request is accepted, this issue will be closed automatically.
+  - pluralized_mr_this = merge_request_count > 1 ? "these" : "this"
+  - pluralized_mr_is = merge_request_count > 1 ? "are" : "is"
+  When #{pluralized_mr_this} merge #{"request".pluralize(merge_request_count)} #{pluralized_mr_is} accepted, this issue will be closed automatically.

app/views/projects/issues/_merge_requests.html.haml

 -if @merge_requests.any?
   %h2.merge-requests-title
     = pluralize(@merge_requests.count, 'Related Merge Request')
-  %ul.bordered-list
+  %ul.unstyled-list
     - has_any_ci = @merge_requests.any?(&:ci_commit)
     - @merge_requests.each do |merge_request|
       %li
@@ -24,5 +24,5 @@
             MERGED
           - elsif merge_request.closed?
             CLOSED
-        - if @closed_by_merge_requests.present?
-          = render 'projects/issues/closed_by_box'
+    - if @closed_by_merge_requests.present?
+      = render partial: 'projects/issues/closed_by_box', locals: {merge_request_count: @merge_requests.count}