typo; clarify what happens on non-windows when 'windows is used
typo; clarify what happens on non-windows when 'windows is used

svn: r17372

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