Documentation AI Readable - Serve .md files

[gkorland]

• Serve markdown versions of your doc pages
  For each documentation page, serve a .md version at the same URL with .md appended. AI tools can parse markdown much better than HTML.

• Fix your markdown page responses
  Your .md URLs should return valid markdown content, not HTML or error pages. Check that your server properly handles .md file requests.

• Support Accept: text/markdown content negotiation
  When a request includes an Accept: text/markdown header, your doc pages should return markdown content instead of HTML. This lets AI tools request the format they prefer without needing a separate .md URL.

• Clean up your markdown output
  Your markdown versions include navigation, footer, or other non-content elements. Strip these to give AI clean, focused content.