small change for announcement feed

app/controllers/announcements_controller.rb

@@ -26,6 +26,7 @@ class AnnouncementsController < ApplicationController
       "bulletin_links" => links,
       "bulletin_files" => files,
       "title" => a.title,
+      "source-site" => "",
       "subtitle" => a.subtitle,
       "statuses" => statuses,
       "category" => a.category.title,