docs: fix doc error for smtp example

website/docs/deployment/smtp.md

@@ -41,5 +41,5 @@ If there are still problems after the verification is passed, you can use `tailc
 
 Because the services provided by different service providers are different, only some of the content can be cited here for demonstration. If you have other URIs that can be used as examples, please submit a PR to help us improve the documentation together:
 
-- `smtps://<email-address>:<password>@smtp.exmail.qq.com/?pool=true`
-- `smtps://<email-address>:<password>@smtp.163.com/?pool=true`
+- `smtps://<username>:<password>@smtp.exmail.qq.com/?pool=true`
+- `smtps://<username>:<password>@smtp.163.com/?pool=true`

website/i18n/zh-Hans/docusaurus-plugin-content-docs/current/deployment/smtp.md

@@ -40,5 +40,5 @@ Options:
 
 因为不同的服务商提供的服务各有差异, 这里只能举出部分内容用于演示。如果你有其他的可以作为示例的 URI 欢迎提交 PR 来帮助我们一起完善文档:
 
-- `smtps://<email-address>:<password>@smtp.exmail.qq.com/?pool=true`
-- `smtps://<email-address>:<password>@smtp.163.com/?pool=true`
+- `smtps://<username>:<password>@smtp.exmail.qq.com/?pool=true`
+- `smtps://<username>:<password>@smtp.163.com/?pool=true`