Slightly edit the citation information

README.md

@@ -139,9 +139,9 @@ For questions, issues, or feature requests, please use the GitHub issue tracker
 If you use OptiMind-SFT or the associated datasets/benchmarks in your work, please cite:
 
 ```
-@article{chen2025optimind,
+@article{zhang2025optimind,
   title={OptiMind: Teaching LLMs to Think Like Optimization Experts},
-  author={Chen, Zeyi and Zhang, Xinzhi and Zope, Humishka and Barbalho, Hugo and Mellou, Konstantina and Molinaro, Marco and Kulkarni, Janardhan and Menache, Ishai and Li, Sirui},
+  author={Zhang, Xinzhi and Chen, Zeyi and Zope, Humishka and Barbalho, Hugo and Mellou, Konstantina and Molinaro, Marco and Kulkarni, Janardhan and Menache, Ishai and Li, Sirui},
   journal={arXiv preprint arXiv:2509.22979},
   year={2025}
 }