Repository address in .promu.yml doesn't exist

Running `go get github.com/stuartnelson3/passenger_exporter` and then `make` results in:

> can't load package: package github.com/stuartnelson3/passenger_exporter_nginx: cannot find package "github.com/stuartnelson3/passenger_exporter_nginx".

.promu.yml refers to github.com/stuartnelson3/passenger_exporter_nginx which doesn't seem to exist (note "_nginx" suffix) - possibly this is a mistake?