Fix MR count for group scope

app/views/layouts/group.html.haml

@@ -15,7 +15,7 @@
         = nav_link(path: 'groups#merge_requests') do
           = link_to merge_requests_group_path(@group) do
             Merge Requests
-            %span.count= current_user.cared_merge_requests.of_group(@group).count
+            %span.count= current_user.cared_merge_requests.opened.of_group(@group).count
         = nav_link(path: 'groups#search') do
           = link_to "Search", search_group_path(@group)
         = nav_link(path: 'groups#people') do