make pkg-links: fix to allo "racket" as a dependency
make pkg-links: fix to allo "racket" as a dependency

Probably only the "base" package should rely on a "racket" version,
while other packages should rely on a "base" version.

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