doc: update README.md.

Author: github-actions[bot]

README.md

@@ -31,7 +31,7 @@ if (openBrowsers('http://localhost:3000')) {
 
 As always, thanks to our amazing contributors!
 
-<!--GAMFC-->\n
+<!--GAMFC--><br/>
 <a href="https://github.com/jaywcjlove" title="小弟调调"><img src="https://avatars.githubusercontent.com/u/1680273?v=4" width="42;" alt="小弟调调"/></a>
 <a href="https://github.com/tomglynch" title="Tom Lynch"><img src="https://avatars.githubusercontent.com/u/17879963?v=4" width="42;" alt="Tom Lynch"/></a><!--GAMFC-END-->