Error in Discrete Ricci Curvature tutorial

[JianingF]

I believe there is a small error in the tutorial for Discrete Ricci curvature. The probability distribution is defined as having weight alpha for x and weight 1 - alpha for a neighbor of x, but the weight for the neighbors of x should be divided by the number of neighbors of x so that the total weight is 1.

[saibalmars]

Thanks, it's been fixed in 724a950