A Clippy for law

navigator validate --help
Validate Markdown and YAML files in `<dir>` (default `.`).

Usage: navigator validate [OPTIONS] [DIR]

Arguments:
  [DIR]  Directory to walk [default: .]

Options:
      --fix   Apply every safe-by-construction rule autofix (whitespace, ATX heading spacing, blockquote.
  -h, --help  Print help