The format commands have inconsistent flags when it comes to indentation.

• to json has --indent https://www.nushell.sh/commands/docs/to_json.html
• to xml has --pretty https://www.nushell.sh/commands/docs/to_xml.html

I assume we should have only one of those, since they seem to mean the same thing.
pretty makes the intention clear, on the other hand --pretty 2 is less obvious than --indent 2.
Which one do you prefer?