docs: 更新 README 文档链接，中文版指向中文文档，英文版指向英文文档

- README.md 中的所有文档链接指向 docs/zh/（中文文档）
- README_EN.md 中的所有文档链接指向 docs/en/（英文文档）
- 移除中英文文档的互链，保持 README 文档的简洁性

README.md

@@ -332,8 +332,7 @@ cd frontend
 
 ### 📚 详细部署文档
 
-更多部署选项和详细说明，请参考：
-- [部署文档（中文）](docs/zh/DEPLOYMENT.md) / [English](docs/en/DEPLOYMENT.md)
+更多部署选项和详细说明，请参考：[部署文档](docs/zh/DEPLOYMENT.md)
 
 包括：
 - 一体化部署详细步骤
@@ -350,8 +349,7 @@ cd frontend
 - **自动删除**：删除 release 时自动删除对应的 Docker 镜像标签
 - **版本号显示**：前端自动显示当前版本号
 
-详细说明请参考：
-- [版本号管理文档（中文）](docs/zh/VERSION_MANAGEMENT.md) / [English](docs/en/VERSION_MANAGEMENT.md)
+详细说明请参考：[版本号管理文档](docs/zh/VERSION_MANAGEMENT.md)
 
 ---
 
@@ -359,7 +357,7 @@ cd frontend
 
 详细的开发指南、API 接口文档、代码规范等，请参考：
 
-### 📖 [开发文档](docs/zh/DEVELOPMENT.md) / [English](docs/en/DEVELOPMENT.md)
+### 📖 [开发文档](docs/zh/DEVELOPMENT.md)
 
 开发文档包含以下内容：
 
@@ -374,9 +372,9 @@ cd frontend
 
 ### 📚 其他文档
 
-- [部署文档（中文）](docs/zh/DEPLOYMENT.md) / [English](docs/en/DEPLOYMENT.md) - 详细的部署指南（Java/Docker）
-- [版本号管理文档（中文）](docs/zh/VERSION_MANAGEMENT.md) / [English](docs/en/VERSION_MANAGEMENT.md) - 版本号管理和自动构建
-- [开发文档（中文）](docs/zh/DEVELOPMENT.md) / [English](docs/en/DEVELOPMENT.md) - 开发指南
+- [部署文档](docs/zh/DEPLOYMENT.md) - 详细的部署指南（Java/Docker）
+- [版本号管理文档](docs/zh/VERSION_MANAGEMENT.md) - 版本号管理和自动构建
+- [开发文档](docs/zh/DEVELOPMENT.md) - 开发指南
 - [跟单系统需求文档](docs/zh/copy-trading-requirements.md) - 后端 API 接口文档
 - [前端需求文档](docs/zh/copy-trading-frontend-requirements.md) - 前端功能文档
 

README_EN.md

@@ -332,7 +332,7 @@ The system supports configuring HTTP proxy through Web UI without modifying envi
 
 ### 📚 Detailed Deployment Documentation
 
-For more deployment options and detailed instructions, please refer to: [Deployment Documentation](docs/DEPLOYMENT.md)
+For more deployment options and detailed instructions, please refer to: [Deployment Documentation](docs/en/DEPLOYMENT.md)
 
 Including:
 - Detailed steps for all-in-one deployment
@@ -349,7 +349,7 @@ The project supports automatic version number management and Docker image buildi
 - **Auto Delete**: Automatically deletes corresponding Docker image tags when releases are deleted
 - **Version Display**: Frontend automatically displays current version number
 
-For detailed instructions, please refer to: [Version Management Documentation](docs/VERSION_MANAGEMENT.md)
+For detailed instructions, please refer to: [Version Management Documentation](docs/en/VERSION_MANAGEMENT.md)
 
 ---
 
@@ -357,7 +357,7 @@ For detailed instructions, please refer to: [Version Management Documentation](d
 
 For detailed development guides, API documentation, code standards, etc., please refer to:
 
-### 📖 [Development Documentation](docs/en/DEVELOPMENT.md) / [中文](docs/zh/DEVELOPMENT.md)
+### 📖 [Development Documentation](docs/en/DEVELOPMENT.md)
 
 The development documentation includes:
 
@@ -372,11 +372,11 @@ The development documentation includes:
 
 ### 📚 Other Documentation
 
-- [Deployment Documentation (English)](docs/en/DEPLOYMENT.md) / [中文](docs/zh/DEPLOYMENT.md) - Detailed deployment guide (Java/Docker)
-- [Version Management Documentation (English)](docs/en/VERSION_MANAGEMENT.md) / [中文](docs/zh/VERSION_MANAGEMENT.md) - Version number management and auto-build
-- [Development Documentation (English)](docs/en/DEVELOPMENT.md) / [中文](docs/zh/DEVELOPMENT.md) - Development guide
-- [Copy Trading System Requirements](docs/zh/copy-trading-requirements.md) - Backend API documentation
-- [Frontend Requirements](docs/zh/copy-trading-frontend-requirements.md) - Frontend feature documentation
+- [Deployment Documentation](docs/en/DEPLOYMENT.md) - Detailed deployment guide (Java/Docker)
+- [Version Management Documentation](docs/en/VERSION_MANAGEMENT.md) - Version number management and auto-build
+- [Development Documentation](docs/en/DEVELOPMENT.md) - Development guide
+- [Copy Trading System Requirements](docs/zh/copy-trading-requirements.md) - Backend API documentation (Chinese only)
+- [Frontend Requirements](docs/zh/copy-trading-frontend-requirements.md) - Frontend feature documentation (Chinese only)
 
 ### 🤝 Contributing