The details of formatting are copied from mkosi. This results in the following:
usage:
ukify build [--linux=LINUX] [--initrd=INITRD] [options…]
ukify genkey [options…]
ukify inspect FILE… [options…]
Build and sign Unified Kernel Images
options:
--version show program's version number and exit
...
I put "[options…]" at the end, because that's what one would generally do
with long options like "--cmdline" and others.