pandoc-3.10: test/command/11479.md

```
% pandoc -f docbook -t gfm
<important>
<itemizedlist>
<listitem>
<simpara>Test.</simpara>
</listitem>
<listitem>
<simpara>Test 2.</simpara>
</listitem>
</itemizedlist>
</important>
^D
> [!IMPORTANT]
> - Test.
>
> - Test 2.
```

```
% pandoc -f gfm -t gfm
> [!IMPORTANT]
> - Test.
>
> - Test 2.
^D
> [!IMPORTANT]
> - Test.
>
> - Test 2.
```