add supplementary material button

README.md

@@ -10,10 +10,11 @@
 [![Imports: isort](https://img.shields.io/badge/%20imports-isort-%231674b1?style=flat&labelColor=ef8336)](https://pycqa.github.io/isort/)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Paper](https://img.shields.io/badge/Paper-EF3939?style=badge&logo=adobeacrobatreader&logoColor=white&color=black&labelColor=ec1c24)](https://arxiv.org/abs/2404.10317)
+[![The supplementary material](https://img.shields.io/badge/Supplementary%20Material-EF3939?style=badge&logo=adobeacrobatreader&logoColor=white&color=black&labelColor=ec1c24)](docs/LLMs4OM_Supplementary_Material.pdf)
 
 </div>
 
-The supplementary material for detailed results of retriever and LLM modules is available here for download: [![The supplementary material](https://img.shields.io/badge/Download%20AS%20pdf-EF3939?style=badge&logo=adobeacrobatreader&logoColor=white&color=black&labelColor=ec1c24)](docs/LLMs4OM_Supplementary_Material.pdf)
+[//]: # (The supplementary material for detailed results of retriever and LLM modules is available here for download: [![The supplementary material]&#40;https://img.shields.io/badge/Supplementary%20Material-EF3939?style=badge&logo=adobeacrobatreader&logoColor=white&color=black&labelColor=ec1c24&#41;]&#40;docs/LLMs4OM_Supplementary_Material.pdf&#41;)
 
 ## What is the LLMs4OM?