update doc

README.md

@@ -65,8 +65,6 @@ Start Arthas:
 
 ### Documentation
 
-English version is on the way, if you would like to contribute, please leave a message [here](https://github.com/alibaba/arthas/issues/51)
-
 * [User manual](https://alibaba.github.io/arthas/en)
 * [Installation](https://alibaba.github.io/arthas/en/install-detail.html)
 * [Quick start](https://alibaba.github.io/arthas/en/quick-start.html)

README_CN.md

@@ -55,8 +55,6 @@ curl -L https://alibaba.github.io/arthas/install.sh | sh
 
 ### 文档
 
-社区正在进行英文版本的翻译工作，如果您有兴趣请在 [这里](https://github.com/alibaba/arthas/issues/51)留言。
-
 * [用户文档](https://alibaba.github.io/arthas/)
 * [安装](https://alibaba.github.io/arthas/install-detail.html)
 * [快速入门](https://alibaba.github.io/arthas/quick-start.html)

site/src/site/sphinx/en/index.md

@@ -34,8 +34,6 @@ Arthas is built to solve these issues. A developer can troubleshoot production i
 Contents
 --------
 
-English version has just been finished. If you would like to make it better, please check [here](https://github.com/alibaba/arthas/issues/51) and submit your pull request.
-
 * [Installation](install-detail.md)
 * [Quick start](quick-start.md)
 * [Advanced usage](advanced-use.md)