message: Fix link on comment entities
diff: @@ -30,7 +30,7 @@ module.exports = class Comment extends Base
  for entity in entities
  if entity.type == 'user'
  output = output + text.slice(lastPosition, entity.start) +
  - "[@#{entity.user_name}](#{entity.user_slug})"
  + "[@#{entity.user_name}](/#{entity.user_slug})"
  lastPosition = entity.end
  output += text.slice(lastPosition)
  