add demo sites

readme.md

@@ -2,12 +2,13 @@ __English__ · [简体中文](readme_zh.md)
 
 ---
 
-**[project documentation](https://cdhigh.github.io/KindleEar)**     
+**[Project documentation](https://cdhigh.github.io/KindleEar)**     
 
 
 
-[Demo Site](https://kindleear.onrender.com/)  
-Note: The demo site is a free service hosted on Render. It may take around 50 seconds to start up the first time you open it. The login credentials are `admin/admin`. All data will be automatically cleared after a period of inactivity, so feel free to perform any operations. You can use it to test ebook pushing.        
+[Demo Site1](https://kindleear.koyeb.app/)  
+[Demo Site2](https://kindleear.onrender.com/)  
+Note: The demo site is a free service hosted on Koyeb/Render. It may take around 50 seconds to start up the first time you open render demo site. The login username and password are `admin/admin`. All data will be automatically cleared after a period of inactivity, so feel free to perform any operations. You can use it to test ebook pushing.        
 
 
 

readme_zh.md

@@ -5,8 +5,9 @@
 **[项目文档](https://cdhigh.github.io/KindleEar)**    
 
 
-[体验站点](https://kindleear.onrender.com/)    
-注：体验站点是在render上搭建的免费服务，第一次打开会大约有50s的启动时间，登录账号密码为 `admin/admin`，一段时间不活动后所有数据会被自动清除，所以可以大胆放心的进行任何操作，你可以进行电子书推送测试。  
+[体验站点1](https://kindleear.koyeb.app/)  
+[体验站点2](https://kindleear.onrender.com/)    
+注：体验站点是在koyeb/render上搭建的免费服务，render第一次打开会大约有50s的启动时间，登录账号密码为 `admin/admin`，一段时间不活动后所有数据会被自动清除，所以可以大胆放心的进行任何操作，你可以进行电子书推送测试。