update citation

README.md

@@ -34,11 +34,13 @@ generation_api = GenerationAPI('mt5-base-3task-highlight-combined3')
 
 ##  Citation 📜
 ```
-@article{akyon2021automated,
-  title={Automated question generation and question answering from Turkish texts using text-to-text transformers},
-  author={Akyon, Fatih Cagatay and Cavusoglu, Devrim and Cengiz, Cemil and Altinuc, Sinan Onur and Temizel, Alptekin},
-  journal={arXiv preprint arXiv:2111.06476},
-  year={2021}
+@article{akyon2022questgen,
+    author = {Akyon, Fatih Cagatay and Cavusoglu, Ali Devrim Ekin and Cengiz, Cemil and Altinuc, Sinan Onur and Temizel, Alptekin},
+    doi = {10.3906/elk-1300-0632.3914},
+    journal = {Turkish Journal of Electrical Engineering and Computer Sciences},
+    title = {{Automated question generation and question answering from Turkish texts}},
+    url = {https://journals.tubitak.gov.tr/elektrik/vol30/iss5/17/},
+    year = {2022}
 }
 ```
 
@@ -48,7 +50,7 @@ generation_api = GenerationAPI('mt5-base-3task-highlight-combined3')
 **Downstream-task:** Extractive QA/QG, Answer Extraction  
 **Training data:** TQuADv2-train, TQuADv2-val, XQuAD.tr  
 **Code:**  https://github.com/obss/turkish-question-generation  
-**Paper:**  https://arxiv.org/abs/2111.06476  
+**Paper:**  https://journals.tubitak.gov.tr/elektrik/vol30/iss5/17/  
 
 ## Hyperparameters
 ```