Ensure consistent URL format without trailing slashes in example pages

- Add URL normalization logic to prevent automatic redirects to URLs with trailing slashes
- Update handleExampleSelect function to generate URLs without trailing slash before query parameters
- Implement path normalization to convert /example-detail/?id=... to /example-detail?id=... format
- Add useEffect hook to monitor and correct URL format during navigation and language switching

Author: w12594822

docs/src/pages/examples.tsx

@@ -51,7 +51,7 @@ function getExampleLink(exampleId: string): string {
            window.location.pathname.startsWith('/en/') ? '/en' : '') 
         : '';
 
-    // 跳转到示例详情页，保持语言前缀
+    // 跳转到示例详情页，保持语言前缀，不使用路径斜杠，直接连接查询参数
     return currentLangPrefix ? `${currentLangPrefix}/example-detail?id=${exampleId}` : `/example-detail?id=${exampleId}`;
 }