feat: enhance About and Contact pages with new content and layout updates

- Added GitHub and deployment information to the About page, including links and self-hosting instructions.
- Updated the Contact page to emphasize transparency in the development process with improved text styling.
- Removed outdated sections to streamline content presentation.

src/layout/hero-layout/index.tsx

@@ -1,4 +1,4 @@
-import { Outlet, Link } from "react-router-dom"
+import { Outlet, Link, useLocation } from "react-router-dom"
 import { useMemo } from "react"
 import dayjs from "dayjs"