fix: apply markdownlint formatting fixes

Auto-applied markdownlint-fix formatting rules:
- Add blank lines after headers and before list items
- Escape underscores in Python module paths (__init__ → **init**)

These changes resolve the pre-commit hook failure in CI.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: iaminawe