--output, --json, and --md options don't have to be exclusive

[Lexy2]

If you specify both --output, --json, and --md options on the command line, only one of them takes effect, with no clear indication in the documentation of which one prevails.

They don't have to be mutually exclusive, I don't see why the tool can't save both *.json and *.md files at the same time, for example.