Misnomer in diagram subtitle

[GVS-007]

I believe there's a misnomer in the diagrams subheading, right above the "Learning Edge Representations" sections. I believe it should be GNN, instead of GCN. Please review it.

Schematic for a GCN GNN architecture, which updates node representations of a graph by pooling neighboring nodes at a distance of one degree.

I believe GCN refers to graph convolutional neural nets, The diagram discusses only GNNs. Please review it.