Update README.md

README.md

@@ -23,9 +23,11 @@ nl: natural language description;
 ```
 
 Citation:
+```
 @article{liang2024condor,
   title={Condor: A Code Discriminator Integrating General Semantics with Code Details},
   author={Liang, Qingyuan and Zhang, Zhao and Liu, Chen and Sun, Zeyu and Zhang, Wenjie and Chen, Yizhou and Zhao, Zixiao and Luo, Qi and Wang, Wentao and Jiang, Yanjie and others},
   journal={arXiv preprint arXiv:2412.17429},
   year={2024}
 }
+```