fixed a bug in the docs typo
fixed a bug in the docs typo

Not for the release (because it modifies a file that has been changed too much and because this commit is a minor change)

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