That was a (sfortunate) issue due to the line wrapping.
so, now please use tab instead of spaces in the dh_auto_install target, set the distribution to unstable from UNRELEASED update your copyright to a more complete version (you can take example from there) https://sources.debian.net/src/debomatic/0.21-1/debian/copyright/ and we might be good to go. cheers, G.