pandoc-3.10: test/command/9569.md

```
% pandoc -f docbook -t gfm
<note>
  <para>Some content</para>
</note>
<para>Spacer.</para>
<note>
  <title>A note with a title. Works, but the title is discarded.</title>
  <para>Some content</para>
</note>
^D
> [!NOTE]
> Some content

Spacer.

> [!NOTE]
> Some content
```