update model card

README.md

@@ -22,4 +22,12 @@ For more details about the training data and the model, visit the original repo
 
 Please cite the following paper:
 ```
+@misc{gonzalez2023good,
+      title={Beyond Good Intentions: Reporting the Research Landscape of NLP for Social Good}, 
+      author={Fernando Gonzalez and Zhijing Jin and Jad Beydoun and Bernhard Schölkopf and Tom Hope and Mrinmaya Sachan and Rada Mihalcea},
+      year={2023},
+      eprint={2305.05471},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL}
+}
 ```