Given a dictionary containing counts of both upvotes and downvotes, return what vote count should be displayed. This is calculated by subtracting the number of downvotes from upvotes.
get_vote_count({ "upvotes": 13, "downvotes": 0 }) ➞ 13
get_vote_count({ "upvotes": 2, "downvotes": 33 }) ➞ -31
get_vote_count({ "upvotes": 132, "downvotes": 132 }) ➞ 0
You can expect only positive integers for vote counts.