fix(site-components): fix anchor classname to optimize scrolling behavior

[RSS1102]

🤔 这个 PR 的性质是？

• 日常 bug 修复
• 新特性提交
• 文档改进
• 演示代码改进
• 组件样式/交互改进
• CI/CD 改进
• 重构
• 代码风格优化
• 测试用例
• 分支合并
• 其他

🔗 相关 Issue

💡 需求背景和解决方案

• 点击锚点跳转时被顶部遮挡

📝 更新日志

• fix(site-components): 修正内容组件中标题专属类名判断逻辑

• 本条 PR 不需要纳入 Changelog

☑️ 请求合并前的自查清单

⚠️ 请自检并全部勾选全部选项。⚠️

• 文档已补充或无须补充
• 代码演示已提供或无须提供
• TypeScript 定义已补充或无须补充
• Changelog 已提供或无须提供

[tencent-adm]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/Tencent/tdesign/@tdesign/site-components@747

npm i https://pkg.pr.new/Tencent/tdesign/tdesign-theme-generator@747

commit: 055ce02

[tdesign-bot]

TDesign Component Site Preview CI Open

Sites (8)

Component	Preview
tdesign-site
tdesign-vue
tdesign-react
tdesign-vue-next
@tdesign-vue-next/chat
tdesign-mobile-vue
tdesign-mobile-react
tdesign-miniprogram

[RSS1102]

tdesign/packages/site-components/src/components/td-doc-content/index.js

Line 80 in e5a38c4

target.classList.contains('tdesign-header-anchor') ||

[RSS1102]

修改

tdesign/packages/site-components/src/components/td-doc-content/index.js

Line 80 in e5a38c4

target.classList.contains('tdesign-header-anchor') ||

-  target.classList.contains('tdesign-header-anchor') || 
+  target.classList.contains('header-anchor') ||