The dead link on the website homepage

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Describe the issue 描述问题

the [Open Technical Grants](https://forum.conflux.fun/t/open-technical-grants/14399) link in the footer of the homepage currently does not work, It should be remove or update

Optional: Affected page(s) or section(s) 受影响的页面

https://www.confluxdocs.com/

Optional: Suggested solution 如何解决

remove or update the dead link

Optional: Additional context 问题上下文信息

No response

Confirmation

• I'd be willing to fix this issue myself within 2 months. 我将在两个月内自己修复这个问题。