docx format

[lskatz]

Hi, could you add a format option so that we could choose docx or pdf? Thank you!

For reference:

• docx more full format inara#56
• Doc or docx format inara#14

[lskatz]

I think you'd just need to expose outformats https://github.com/openjournals/inara/blob/main/scripts/entrypoint.sh#L22