In Standard Arabic, it's supposed to be "huwa," not "huwwa."
It's a typo. Please report it using the "Report" button next time :-)
It isn't just this one sentence; the "huwwa" and "hiyya" are all over the place! :O
Then they have a lot of work ahead of them :/
Yes, do remember that this is the beginning of the course, mistakes are bound to appear.