[Feature Request] webfetch should detect and fetch markdown versions of pages when available

Bug Description
Have webfetch check for .md versions of sites to be avialble, or if it reads that or sees an option in the early part of the site, it should fetch those. Example page that fails for webfetch, but works with .md, that has a site type selector: https://mcp-use.com/docs/python/client/code-mode

Environment Info

• Platform: darwin
• Terminal: xterm-256color
• Version: 2.0.73
• Feedback ID: e65d36ce-25b0-4159-82e8-6df177c84e49