Custom markdown from nixpkgs is not rendered

Custom elements like

```
::: {.note}
This option mainly exists because nginx' add_header and headers_more's more_set_headers function do not support inheritance to lower levels.
:::
```

are not rendered

https://search.xn--nschtos-n2a.de/?query=commonLocationsConfig&option=services.nginx.virtualHosts.%3Cname%3E.commonLocationsConfig