change domain

Author: Nick

README.md

@@ -34,7 +34,7 @@ Doctron is a Docker-powered,serverless,sample,fast,high quality document convert
 
 ## Online experience
 open the following website to have a try. Conversion may be slower due to low server configuration.
-[Doctron Live Demo](http://doctron.lampnick.com)
+[Doctron Live Demo](http://doctron.mitnick.fun)
 
 ## Convert preview
 - source website: https://support.apple.com/zh-cn/iphone-12-and-iphone-12-pro-service-program-for-no-sound-issues