use shorter wording

Author: serxa

index.html

@@ -415,10 +415,10 @@ <h1>JSONBench — a Benchmark For Data Analytics On JSON</h1>
         </td>
     </tr>
     <tr>
-        <th>Retain Structure: </th>
+        <th>Flattening: </th>
         <td id="selectors_retain_structure">
-            <a class="selector selector-active" id="selector-retain-structure-yes">Yes</a>
-            <a class="selector" id="selector-retain-structure-no">No</a>
+            <a class="selector selector-active" id="selector-retain-structure-yes">No</a>
+            <a class="selector" id="selector-retain-structure-no">Yes</a>
         </td>
     </tr>
 </table>