modify citation

fingpt/FinGPT_sentiment/README.md

@@ -71,14 +71,11 @@ pip install -r requirements.txt
 If you find our work useful or use it in your projects, please consider citing our original paper. The bibtex reference will be updated once available.
 
 ```
-@misc{zhang2023instructfingpt,
+@article{zhang2023instructfingpt,
       title={Instruct-FinGPT: Financial Sentiment Analysis by Instruction Tuning of General-Purpose Large Language Models}, 
       author={Boyu Zhang and Hongyang Yang and Xiao-Yang Liu},
-      year={2023},
       journal={FinLLM Symposium at IJCAI 2023},
-      eprint={2306.12659},
-      archivePrefix={arXiv},
-      primaryClass={cs.CL}
+      year={2023}
 }
 ```