Refactor citation link in README.rst

Author: LacombeLouis

README.rst

@@ -228,15 +228,15 @@ and with the financial support from Région Ile de France and Confiance.ai.
 📝 License
 ==========
 
-MAPIE is free and open-source software licensed under the `<https://github.com/scikit-learn-contrib/MAPIE/blob/master/LICENSE>`_.
+MAPIE is free and open-source software licensed under the `license <https://github.com/scikit-learn-contrib/MAPIE/blob/master/LICENSE>`_.
 
 
 📚 Citation
 ===========
 
 If you use MAPIE in your research, please cite using:
 
-```bibtex
+```tex
 @inproceedings{Cordier_Flexible_and_Systematic_2023,
 author = {Cordier, Thibault and Blot, Vincent and Lacombe, Louis and Morzadec, Thomas and Capitaine, Arnaud and Brunel, Nicolas},
 booktitle = {Conformal and Probabilistic Prediction with Applications},