Fixed badge

README.md

@@ -17,7 +17,7 @@ app_file: demo/app.py
 [![license](https://img.shields.io/github/license/DAVFoundation/captain-n3m0.svg?style=flat-square)](https://github.com/raidionics/LyNoS/blob/main/LICENSE.md)
 [![CI/CD](https://github.com/raidionics/LyNoS/actions/workflows/deploy.yml/badge.svg)](https://github.com/raidionics/LyNoS/actions/workflows/deploy.yml)
 <a target="_blank" href="https://huggingface.co/spaces/andreped/LyNoS"><img src="https://img.shields.io/badge/🤗%20Hugging%20Face-Spaces-yellow.svg"></a>
-[![paper](https://img.shields.io/badge/arXiv-preprint-D12424)](https://arxiv.org/abs/2311.01138)
+[![paper](https://img.shields.io/badge/paper-pdf-D12424)](https://doi.org/10.1080/21681163.2022.2043778)
 
 **LyNoS** was developed by SINTEF Medical Image Analysis to accelerate medical AI research.