docs: update readme doc

Author: fecommunity

README-zh_CN.md

@@ -1,6 +1,10 @@
 <div align="center"><a name="readme-top"></a>
 
-<a href="https://gaoredu.com" title="ReactPress"><img height="180" src="./public/logo.png"></a>
+<a href="https://gaoredu.com" title="ReactPress"><img height="180" src="./public/logo.png">
+</a>
+
+[![ReactPress](./public/poster.png)](https://gaoredu.com)
+
 
 `ReactPress` 是使用React开发的开源发布平台，用户可以在支持React和MySQL数据库的服务器上架设属于自己的博客、网站。也可以把 `ReactPress` 当作一个内容管理系统（CMS）来使用。
 
@@ -19,7 +23,7 @@
 
 - 移动端
 
-[![Mobile Phone](./public/mobile.png)](https://gaoredu.com)
+<img src="./public/mobile.png" alt="Mobile Phone" width="500">
 
 ## ✨ 特性
 

README.md

@@ -2,6 +2,9 @@
 
 <a href="https://gaoredu.com" title="ReactPress"><img height="180" src="./public/logo.png"></a>
 
+[![ReactPress](./public/poster.png)](https://gaoredu.com)
+
+
 `ReactPress` is an open-source publishing platform developed using the React. Users can set up their own blogs and websites on servers that support React and MySQL databases. `ReactPress` can also be used as a content management system (CMS).
 
 [![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/fecommunity/reactpress/blob/master/LICENSE)[![(Runtime) Build and Test](https://github.com/facebook/react/actions/workflows/runtime_build_and_test.yml/badge.svg)](https://github.com/fecommunity/reactpress/blob/master/package.json) [![(Compiler) TypeScript](https://github.com/facebook/react/actions/workflows/compiler_typescript.yml/badge.svg?branch=main)](https://github.com/fecommunity/reactpress/blob/master/client/tsconfig.json) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://github.com/fecommunity/reactpress/pulls)