Merge branch 'patch-24' into 'master'

Fix graph notes number duplication.

See merge request gitlab-org/gitlab-ce!15696

app/helpers/graph_helper.rb

@@ -8,7 +8,7 @@ module GraphHelper
 
     # append note count
     notes_count = @graph.notes[commit.id]
-    refs << "[#{notes_count} #{pluralize(notes_count, 'note')}]" if notes_count > 0
+    refs << "[#{pluralize(notes_count, 'note')}]" if notes_count > 0
 
     refs
   end

changelogs/unreleased/patch-24.yml

+---
+title: Fix graph notes number duplication.
+merge_request: 15696
+author: Vladislav Kaverin
+type: fixed