added arxiv link

index.html

@@ -68,7 +68,7 @@ <h1 class="title is-1 publication-title">Solving Inverse Problems in Protein Spa
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                     <span class="link-block">
-                        <a href="https://" target="_blank" class="external-link button is-normal is-rounded is-dark">
+                        <a href="https://arxiv.org/abs/2406.04239" target="_blank" class="external-link button is-normal is-rounded is-dark">
                         <span class="icon">
                             <i class="ai ai-arxiv"></i>
                         </span>