Artifacts are plural, feedback:

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5347/diffs#note_13173284

lib/api/builds.rb

@@ -70,7 +70,7 @@ module API
         build = get_build!(params[:build_id])
-        present_artifact!(build.artifacts_file)
+        present_artifacts!(build.artifacts_file)
       end
       # Download the artifacts file from ref_name and job
@@ -86,7 +86,7 @@ module API
         builds = user_project.latest_successful_builds_for(params[:ref_name])
         latest_build = builds.find_by!(name: params[:job])
-        present_artifact!(latest_build.artifacts_file)
+        present_artifacts!(latest_build.artifacts_file)
       end
       # Get a trace of a specific build of a project
@@ -198,7 +198,7 @@ module API
         get_build(id) || not_found!
       end
-      def present_artifact!(artifacts_file)
+      def present_artifacts!(artifacts_file)
         if !artifacts_file.file_storage?
           redirect_to(build.artifacts_file.url)
         elsif artifacts_file.exists?