docs: update docs

Author: timerring

README-en.md

@@ -7,7 +7,7 @@
 
 [简体中文](./README.md) | English
 
-`looplive` is a 24/7 automated **multi-platform streaming** tool.
+`looplive` is a 24/7 automated **multi-platform simultaneous streaming** tool.
 
 Theoretically, any platform with RTMP servers can be supported. Feel free to open an [issue](https://github.com/timerring/looplive/issues) to request support for new platforms.
 

README.md

@@ -7,7 +7,7 @@
 
 简体中文 | [English](./README-en.md)
 
-`looplive` 是一个 7 x 24 小时全自动**循环多平台推流**直播工具。
+`looplive` 是一个 7 x 24 小时全自动**循环多平台同时推流**直播工具。
 
 理论上只要平台有 rtmp 服务器就能支持，增加新的平台欢迎 [issue](https://github.com/timerring/looplive/issues)。