Update README.md

README.md

@@ -211,6 +211,7 @@ print("Chat response:", chat_response)
 
 ## ✒️ Citation
 
+```
 @misc{jiang2025r4bincentivizinggeneralpurposeautothinking,
       title={R-4B: Incentivizing General-Purpose Auto-Thinking Capability in MLLMs via Bi-Mode Annealing and Reinforce Learning}, 
       author={Jie Jiang and Qi Yang and Bolin Ni and Shiming Xiang and Han Hu and Houwen Peng},
@@ -220,6 +221,7 @@ print("Chat response:", chat_response)
       primaryClass={cs.CV},
       url={https://arxiv.org/abs/2508.21113}, 
 }
+```
 
 ## Acknowledgements