announcment fixed for frontend

vendor/built_in_modules/announcement/init.rb

@@ -37,7 +37,7 @@ module Announcement
         image :image
         field :postdate
         link_field :title,{:method => 'panel_announcement_front_end_bulletin_path',:args=>:self}
-        link_field :bulletin_category_with_title,{:method => 'panel_announcement_front_end_bulletins_path',:args=>{:category_id => [:bulletin_category,:id]}}
+        link_field :bulletin_category_with_title,{:method => 'panel_announcement_front_end_bulletins_path',:args=>{:category_id => [:category,:id]}}
         field :subtitle
         link_to_more 'panel_announcement_front_end_bulletins_path',:title_i18n=> 'more_plus'
       end