In [Prim algo](https://github.com/gyuho/learn/tree/master/doc/go_graph_minimum_spanning_tree#prim-algorithm) description on visual example's step #7 shouldn't the blue table have H=8 instead of H=∞? 
In Prim algo description on visual example's step #7 shouldn't the blue table have H=8 instead of H=∞?