Update README.md

README.md

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 # Model Card — Site-Specific MIMO Channel Generation via Diffusion and Flow Matching: Fidelity, Efficiency, and Downstream Utility
 
-#### Link to paper: [[https://arxiv.org/abs/2606.20098](https://arxiv.org/abs/2606.20098)]
+#### Link to paper: [https://arxiv.org/abs/2606.20098](https://arxiv.org/abs/2606.20098)
 #### Authors: Sina Beyraghi, Masoud Sadeghian, Firdous Bin Ismail, Angel Lozano, Paul Almasan, and Giovanni Geraci
 
 Contact: Sina Beyraghi (<mohammadsina.beyraghi@telefonica.com>)
@@ -27,6 +27,7 @@ If you use these models, please cite:
       url={https://arxiv.org/abs/2606.20098}, 
 }
 ```
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 ## Model overview