Redundant edge in "Graph Attention Networks" figure

[agamemnonc]

This issue refers to this figure.

I believe that the edge between the yellow "key" node and the very light grey node should not be there, as in this case the light grey node should also be a query node and used for computing a pairwise score with the query node.

Btw, congratulations for the excellent article! By far the best introductory resource on GNNs I have come across, thank you for this.