#文档 异步调用关于compiler hacker文档排版格式问题

[dubbo文档库异步调用](http://dubbo.apache.org/zh-cn/docs/user/demos/async-call.html)这一页到compiler hacker这块，文档排版就出问题了。


Open the linked Dubbo async-call documentation page and inspect the layout around “compiler hacker,” using the attached screenshot as the reference. Identify the documentation source for that section and correct the formatting; done means that section renders as intended on the page.

Written by the indexing model from the issue text.