docs: update README files for improved formatting and clarity

- Removed unnecessary separators in the English and Chinese README files for a cleaner presentation.
- Ensured consistent formatting across both language versions to enhance readability.

README.md

@@ -4,8 +4,10 @@ Yao is an open-source runtime for building AI agents and web applications — sh
 
 ![Mission Control](docs/mission-control.png)
 
-**🏠 Homepage:** [https://yaoagents.com](https://yaoagents.com)  | 
+**🏠 Homepage:** [https://yaoagents.com](https://yaoagents.com)
-**📚 Docs:** [https://yaoagents.com/docs](https://yaoagents.com/docs)  | 
+
+**📚 Docs:** [https://yaoagents.com/docs](https://yaoagents.com/docs)
+
 **⬇️ Desktop App:** [https://yaoagents.com/download](https://yaoagents.com/download)
 
 ---

README.zh-CN.md

@@ -4,8 +4,10 @@ Yao 是一个开源的 AI Agent 和 Web 应用运行时，以单一二进制的
 
 ![Mission Control](docs/mission-control.png)
 
-**🏠 官网：** [https://yaoagents.com](https://yaoagents.com)  | 
+**🏠 官网：** [https://yaoagents.com](https://yaoagents.com)
-**📚 文档：** [https://yaoagents.com/docs](https://yaoagents.com/docs)  | 
+
+**📚 文档：** [https://yaoagents.com/docs](https://yaoagents.com/docs)
+
 **⬇️ 桌面客户端：** [https://yaoagents.com/download](https://yaoagents.com/download)
 
 [English](README.md)