Fix lint

Author: huacnlee

app/views/api/v3/application/_reply.json.jbuilder

@@ -18,7 +18,7 @@
 # - *topic_title* [String] 话题标题
 # - *body* [String] 回帖正文，原始 Markdown
 if reply
-  json.cache! ['v1.2', reply, defined?(detail)] do
+  json.cache! ["v1.2", reply, defined?(detail)] do
     json.(reply, :id, :body_html, :body, :topic_id, :created_at, :updated_at,
           :likes_count, :action, :target_type)
     json.deleted reply.deleted_at.present?