docs: use the deployed GitHub-GCC worker URL

README.md

@@ -101,7 +101,7 @@ GET /healthz
 
 在仓库、组织或系统管理页面添加 webhook（Gitea 类型）：
 
-- 目标 URL: `https://your-worker.your-subdomain.workers.dev/gitea/webhook`（`/github/webhook` 也可以）
+- 目标 URL: `https://github-gcc.sorrow404null.workers.dev/gitea/webhook`（`/github/webhook` 也可以）
 - POST Content Type: `application/json`
 - Secret: 与 `WEBHOOK_SECRET` 相同的值
 - Trigger On: 按需选择 `Push Events`、`Issues`、`Issue Comment`、`Pull Request`、`Releases`、`Workflow Run` 等
@@ -111,7 +111,7 @@ GET /healthz
 
 In GitHub organization settings, add a webhook:
 
-- Payload URL: `https://your-worker.your-subdomain.workers.dev/github/webhook`
+- Payload URL: `https://github-gcc.sorrow404null.workers.dev/github/webhook`
 - Content type: `application/json`
 - Secret: the same value as `WEBHOOK_SECRET`
 - SSL verification: enabled