Update README.md

README.md

@@ -2,6 +2,7 @@
 https://github.com/teacherpeterpan/Logic-LLM/tree/main/data/ProntoQA
 
 # Reference
+```
 @inproceedings{PanLogicLM23,
   author       = {Liangming Pan and
                   Alon Albalak and
@@ -13,4 +14,5 @@ https://github.com/teacherpeterpan/Logic-LLM/tree/main/data/ProntoQA
   year         = {2023},
   month        = {Dec},
   url          = {https://arxiv.org/abs/2305.12295}
-}
+}
+```