Update index.html

Author: xh9998

index.html

@@ -1232,7 +1232,7 @@ <h2 class="title">BibTeX</h2>
 <footer class="footer">
   <div class="container">
     <div class="content has-text-centered">
-      <a class="icon-link" href="" target="_blank">
+      <a class="icon-link" href="https://arxiv.org/abs/2501.10110" target="_blank">
         <i class="fas fa-file-pdf"></i>
       </a>
       <a class="icon-link" href="https://github.com/xh9998/DiffVSR" target="_blank">