即将跳转到外部网站，安全性未知

避免在社交软件及网站统计中获取来路信息，保护隐私。

https://gitee.com/link?target=

https://link.csdn.net/?target=

https://oschina.net/action/GoToLink?url=

https://links.jianshu.com/go?to=

https://mail.qq.com/cgi-bin/readtemplate?t=safety&check=false&gourl=

https://docs.qq.com/scenario/link.html?url=