pandoc-3.10: test/command/8011.md

```
% pandoc -f docbook -t gfm
<itemizedlist mark="none">
<listitem>
<simpara>&#10063; a</simpara>
</listitem>
<listitem>
<simpara>&#10003; b</simpara>
</listitem>
</itemizedlist>
^D
- [ ] a

- [x] b
```