raco setup: fix `info-domain`, first
raco setup: fix `info-domain`, first

That way, if you interrupt a `raco setup`, then programs that rely
on a directory of "info.rkt" mappings are more likely to work.

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket