README: Removed broken icon for Chinese translation (#2670)

The icon of the link to a Chinese translation was broken and this removes the icon and replaces it with a simple "简体中文" meaning "Simplified Chinese".

Author: edukisto

README.md

@@ -29,4 +29,4 @@ Thank you so much for contributing!!
 
 ## Translations
 
-* [![中文说明](http://awesomes.oss-cn-beijing.aliyuncs.com/readme.png)](https://www.awesomes.cn/repo/PrismJS/prism)
+* [简体中文](https://www.awesomes.cn/repo/PrismJS/prism)

docs/index.html

@@ -74,7 +74,7 @@ <h2>Contribute to Prism!</h2>
 <p>Thank you so much for contributing!!</p>
 <h2>Translations</h2>
 <ul>
-<li><a href="https://www.awesomes.cn/repo/PrismJS/prism"><img src="http://awesomes.oss-cn-beijing.aliyuncs.com/readme.png" alt="中文说明"></a></li>
+<li><a href="https://www.awesomes.cn/repo/PrismJS/prism">简体中文</a></li>
 </ul></article>
     </section>