fix

app/controllers/announcements_controller.rb

@@ -94,7 +94,7 @@ class AnnouncementsController < ApplicationController
         "subtitle-head" => t('announcement.table.sub_title'),
         "category-head" => t('announcement.table.category'),
         "link-head" => t('announcement.table.link'),
-        "file-head" => t('announcement.table.file')
+        "file-head" => t('announcement.table.file'),
         "read_more" => "/#{I18n.locale.to_s + page.url}"
       }
     }