[fix] minor formatting

Author: chyomin06

README.md

@@ -160,12 +160,14 @@ Fabien Racapé, Hyomin Choi, Eimran Eimon, Sampsa Riikonen, Jacky Yat-Hong Lam
 
 If you use this project, please cite:
 
+```
 @article{compressai_vision,
   title={CompressAI-Vision: Open-source software to evaluate compression methods for computer vision tasks},
   author={Choi, Hyomin and Han, Heeji and Rosewarne, Chris and Racap{\'e}, Fabien},
   journal={arXiv preprint arXiv:2509.20777},
   year={2025}
 }
+```
 
 ## Related links
  * [HEVC HM reference software](https://hevc.hhi.fraunhofer.de)