chinese(url): small change to url in footer

Author: naomiblack

public/_includes/_footer.jade

@@ -49,7 +49,7 @@ else
       h3.text-headline LANGUAGES
 
       ul.text-body
-        li <a href="http://www.angular.cn/">中文版</a>
+        li <a href="http://angular.cn/">中文版</a>
 
   footer(class="background-steel")
     small.text-caption Powered by Google ©2010-2016. Code licensed under an <a href="/license" class="text-snow">MIT-style License</a>. Documentation licensed under <a class="text-snow" href="http://creativecommons.org/licenses/by/4.0/">CC BY 4.0</a>.