docs: 更新 README 中的代码克隆地址

Author: XGenerationLab

README.md

@@ -75,7 +75,7 @@ python -m xiyan_mcp_server
 
 ```bash
 # Clone the repository
-git clone https://github.com/yourusername/mysql_mcp_server.git
+git clone https://github.com/XGenerationLab/xiyan_mcp_server.git
 cd xiyan_mcp_server
 
 # Create virtual environment