Update README.md

README.md

@@ -188,7 +188,7 @@ Top journals with paper counts:
 
 * Lin H, Gao Z, Wu L, et al. <b>Conditional Local Filters with Explainers for Spatio-Temporal Forecasting[J]</b>. arXiv preprint arXiv:2101.01000, 2021. [Link](https://arxiv.org/abs/2101.01000v1)
 
-* Li F, Feng J, Yan H, et al. <b>Dynamic Graph Convolutional Recurrent Network for Traffic Prediction: Benchmark and Solution[J]</b>. arXiv preprint arXiv:2104.14917, 2021. [Link](https://arxiv.org/abs/2104.14917) [Code (still empty on 2021/5/8)](https://github.com/tsinghua-fib-lab/Traffic-Benchmark)
+* Li F, Feng J, Yan H, et al. <b>Dynamic Graph Convolutional Recurrent Network for Traffic Prediction: Benchmark and Solution[J]</b>. arXiv preprint arXiv:2104.14917, 2021. [Link](https://arxiv.org/abs/2104.14917) [Code](https://github.com/tsinghua-fib-lab/Traffic-Benchmark)
 
 * Chen J, Li K, Li K, et al. <b>Dynamic Planning of Bicycle Stations in Dockless Public Bicycle-sharing System Using Gated Graph Neural Network[J]</b>. arXiv preprint arXiv:2101.07425, 2021. [Link](https://arxiv.org/abs/2101.07425)