FIX projects fork users bug

app/views/projects/fork_users.json.jbuilder

@@ -4,6 +4,7 @@ json.users do
     user = f.user
     fork_project = Project.select(:id,:name).find_by(id: f.fork_project_id)
     json.id f.fork_project_id
+    json.identifier fork_project.identifier
     json.name "#{user.try(:show_real_name)}/#{fork_project.try(:name)}"
     json.login user.try(:login)
     json.image_url url_to_avatar(user)