update readme

README.md

@@ -51,7 +51,7 @@ binary_entail_prob_positive = torch.nn.functional.softmax(outputs['logits'].sque
 ```
 
 ### Citation
-```
+```bibtex
 @misc{huang-etal-2023-do,
     title = "Do LVLMs Understand Charts? Analyzing and Correcting Factual Errors in Chart Captioning",
     author = "Huang, Kung-Hsiang  and
@@ -63,7 +63,8 @@ binary_entail_prob_positive = torch.nn.functional.softmax(outputs['logits'].sque
       Chang, Shih-Fu and
       Ji, Heng",
     year={2023},
+    eprint={2312.10160},
     archivePrefix={arXiv},
     primaryClass={cs.CL}
-}   
-```
+}    
+```