this research is meaningless. wikipedia articles can be edited by anyone. So why then do more men update wiki pages compared to women? Simple, because thats just how it is. Women probably dont care enough to update articles. Its not that its biased towards men. Saying that its biased would be like saying building computers is biased towards men because more men build computers. Its a matter of what the sexes like to do in their spare time.
A similar article could be written about how boy bands sing songs are biased towards women. Its not that they are actually biased towards women, its just that thats what women like. Some men like them im sure, but boy band music tends to be listened to by women.
So basically... stop taking random things that guys like to do that women dont and saying they are biased towards men. Men and Women are different, and its natural that they will like/do different things