docs: update dataset card

README.md

@@ -1,3 +1,26 @@
 ---
+size_categories:
+- 1K<n<10K
+task_categories:
+- graph-ml
 license: cc
 ---
+
+## Dataset Information
+
+| # Nodes | # Edges | # Features |
+|:-------:|:-------:|:----------:|
+| 18,333  | 81,894  |    6,805   |
+
+Pre-processed as per the official codebase of https://arxiv.org/abs/2210.02016
+
+## Citations
+
+```
+@article{ju2023multi,
+  title={Multi-task Self-supervised Graph Neural Networks Enable Stronger Task Generalization},
+  author={Ju, Mingxuan and Zhao, Tong and Wen, Qianlong and Yu, Wenhao and Shah, Neil and Ye, Yanfang and Zhang, Chuxu},
+  booktitle={International Conference on Learning Representations},
+  year={2023}
+}
+```