Fix link URL in index.html

Author: Maplebb

index.html

@@ -156,7 +156,7 @@ <h1 class="title is-1 publication-title is-bold" style="display: inline-block; m
 
               <!-- <br> -->
               <span class="link-block">
-                <a href="https://huggingface.co/datasets/DeepGenTeam/DeepGen-1.0＂ class="external-link button is-normal is-rounded is-dark">
+                <a href="https://huggingface.co/datasets/DeepGenTeam/DeepGen-1.0" class="external-link button is-normal is-rounded is-dark">
                   <span class="icon">
                       😊
                   </span>