Ahh, I think I see what happens here - thank you for this improvement!

This file is generated by the documentation building process, so modifying this file directly won't survive very long.

I did a little bit of digging and found this - The docs generator iterates over every flag for the general options. However, this class (FPM::Command) adds all package flags to itself on startup.

To fix this, maybe having the docs generator skip any package-specific flags for the 'general' section. One way may be to check if the flag's "help" text includes something like (deb only) at the beginning as all package-specific flags will do this. https://github.com/jordansissel/fpm/blob/main/lib/fpm/package.rb#L439