You have to see programs rather than the college. If you want digital marketing then Humber's marketing management postgraduate is not what you're looking for.
I would personally suggest you think about Sheridan's Marketing management program. It leans more towards digital marketing while still having some traditional marketing courses. They also have a graphics design course which is helpful.
These are the two I am personally applying for. There are other colleges that offer pure digital marketing courses but I don't know much about them because I'm more on the traditional marketing side and I will probably do a online course on digital marketing if I go to Humber or a Online course in Marketing Basics if I go to Sheridan.