Update README-CN.md

README-CN.md

@@ -5,15 +5,12 @@
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 ![](./mascot.png)
 
-**Swoole是一个为PHP用C和C++编写的基于事件的高性能异步&协程并行网络通信引擎**
+**Swoole是一个为PHP用C++编写的基于事件的高性能异步&协程并行网络通信引擎**
 
 ## ✨事件驱动