Update index.html

Author: Restore-Assess-Repeat

index.html

@@ -112,7 +112,7 @@ <h2 class="title is-1 publication-title">
                     </a>
                 </span>
                 <span class="link-block">
-                  <a href=""  
+                  <a href="https://github.com/SamsungLabs/RAR"  
                     class="external-link button is-normal is-rounded is-dark">
                     <span class="icon">
                         <i class="fab fa-github"></i>