Example:
{% note() %}
Use this [link](@/internal/link.md).
{% end %}
and the note shortcode:
<div class="note">
{{ body | markdown | safe }}
</div>
The link.md file lives in content/internal/ folder, but the site can not build:
Reason: Filter call 'markdown' failed
Reason: Failed to render markdown filter: Error { kind: Msg("Relative link @/internal/link.md not found."), source: None }