Update README.md

README.md

@@ -20,7 +20,7 @@ This model represents the official checkpoint of the paper titled ["[MASK] is Al
 
 
 [![Website](doc/badges/badge-website.svg)](https://compvis.github.io/mask/)
-[![Paper](https://img.shields.io/badge/arXiv-PDF-b31b1b)](https://arxiv.org/pdf/2412.06787)
+[![Paper](https://img.shields.io/badge/arXiv-PDF-b31b1b)](https://arxiv.org/abs/2412.06787)
 [![Hugging Face Model](https://img.shields.io/badge/🤗%20Hugging%20Face-Model-green)](https://huggingface.co/taohu/mask)
 [![License](https://img.shields.io/badge/License-Apache--2.0-929292)](https://www.apache.org/licenses/LICENSE-2.0)