update citation info

README.md

@@ -229,22 +229,11 @@ This AfriSenti is licensed under a Creative Commons Attribution 4.0 Internationa
 
 
 ```
-@inproceedings{muhammad-etal-2023-semeval,
-  title="{S}em{E}val-2023 Task 12:  Sentiment Analysis for African Languages ({A}fri{S}enti-{S}em{E}val)",
-  author="Muhammad, Shamsuddeen Hassan and
-   Yimam, Seid and 
-   Abdulmumin, Idris and 
-   Ahmad, Ibrahim Sa'id  and 
-   Ousidhoum, Nedjma, and
-   Ayele, Abinew, and 
-   Adelani, David and 
-   Ruder, Sebastian and  
-   Beloucif, Meriem and 
-   Bello, Shehu Bello and 
-   Mohammad, Saif M.",
-  booktitle="Proceedings of the 17th International Workshop on Semantic Evaluation (SemEval-2023)",
-  month=jul,
-  year="2023",
+@article{muhammad2023semeval,
+  title={SemEval-2023 Task 12: Sentiment Analysis for African Languages (AfriSenti-SemEval)},
+  author={Muhammad, Shamsuddeen Hassan and Abdulmumin, Idris and Yimam, Seid Muhie and Adelani, David Ifeoluwa and Ahmad, Ibrahim Sa'id and Ousidhoum, Nedjma and Ayele, Abinew and Mohammad, Saif M and Beloucif, Meriem},
+  journal={arXiv preprint arXiv:2304.06845},
+  year={2023}
 }
 ```