Citation about gnn HOT 1 CLOSED

Thanks, this was added a while ago, just following up to close the issue.

@Article{tfgnn,
author = {Oleksandr Ferludin and Arno Eigenwillig and Martin Blais and
Dustin Zelle and Jan Pfeifer and Alvaro Sanchez{-}Gonzalez and
Sibon Li and Sami Abu{-}El{-}Haija and Peter Battaglia and
Neslihan Bulut and Jonathan Halcrow and
Filipe Miguel Gon{\c{c}}alves de Almeida and Silvio Lattanzi and
Andr{'{e}} Linhares and Brandon Mayer and Vahab Mirrokni and
John Palowitch and Mihir Paradkar and Jennifer She and
Anton Tsitsulin and Kevin Villela and Lisa Wang and David Wong and
Bryan Perozzi},
title = {{TF-GNN:} Graph Neural Networks in TensorFlow},
journal = {CoRR},
volume = {abs/2207.03522},
year = {2022},
url = {http://arxiv.org/abs/2207.03522},
}

from gnn.