fix(test): 修正测试页面中日志文件路径错误

将测试页面中的日志文件路径从相对路径改为绝对路径，确保能正确加载日志文件

test/test_webhook.html

@@ -228,7 +228,7 @@
             logContent.innerHTML = '加载中...';
             
             try {
-                const response = await fetch('wps_form_webhook.log');
+                const response = await fetch('/log/wps_form_webhook.log');
                 if (response.ok) {
                     const text = await response.text();
                     logContent.innerHTML = text;