feat(docs): adding .md to docs pages shows raw markdown

[R44VC0RP]

Summary

• Adds a new API endpoint that serves raw MDX content when .md is appended to any docs URL
• Enables programmatic access to documentation source files

Examples

• /docs/config.md → returns raw MDX for the config page
• /docs/index.md → returns raw MDX for the index page
• /docs/mcp-servers.md → returns raw MDX for the MCP servers page

Implementation

Uses Astro's content collections API to look up docs by slug and returns the raw body content with text/plain content type.

Example: