Update README.md

README.md

@@ -113,7 +113,7 @@ The model repository is licensed under the MIT License.
 
 ## Citations & References
 If you use VibeThinker in your research or product, please cite:
-```python
+```
 @misc{xu2025tinymodelbiglogic,
       title={Tiny Model, Big Logic: Diversity-Driven Optimization Elicits Large-Model Reasoning Ability in VibeThinker-1.5B}, 
       author={Sen Xu and Yi Zhou and Wei Wang and Jixin Min and Zhibin Yin and Yingwei Dai and Shixi Liu and Lianyu Pang and Yirong Chen and Junlin Zhang},