update style

index.html

@@ -35,7 +35,7 @@ <h2 class="text_center">Table Discovery Benchmark</h2>
         &nbsp;&nbsp;
         <a href="url">Code</a>
         &nbsp;&nbsp;
-        <a href="./dataset.html" target="_blank">Datasets</a>(test only, no train)
+        <a href="./dataset.html" target="_blank">Datasets</a> &nbsp; (test only, no train)
     </div>
     <div style="margin-left: 320px;"> 
         <p>Leader board</p>