[MINOR] Fix download table headers
diff --git a/site/downloads/spark.md b/site/downloads/spark.md
index 1af82e7..d8408be 100644
--- a/site/downloads/spark.md
+++ b/site/downloads/spark.md
@@ -40,7 +40,7 @@
         <tr>
             <th><b>Name</b></th>
             <th><b>Archive</b></th>
-            <!th><b>SHA-512</b></th>
+            <th><b>SHA-512</b></th>
             <th><b>signature</b></th>
         </tr>
     </thead>