🐛 Fetcher pulling HTML instead of markdown for changelog

[claude-yolo]

Problem

The fetcher script is pulling HTML content instead of markdown for content/en/docs/claude-code/changelog.md.

File shows GitHub's HTML page source instead of actual changelog content.

Impact

• Breaks changelog documentation
• All three v2.1.50 PRs had this corruption
• Users can't see Claude Code release notes

Next Steps

• Check if code.claude.com/docs/en/changelog is returning HTML instead of markdown
• Fix fetcher URL or add HTML->markdown conversion
• Re-fetch changelog once fixed

Context

• Version 2.1.50 security release is otherwise ready
• Manifest and other docs fetched correctly
• Only changelog.md affected

/cc @lroolle