Fix tests (unrelated, but it doesn't matter much)

Author: javiereguiluz

tests/fixtures/expected/blocks/nodes/tables.html

@@ -24,6 +24,7 @@
 </table>
 </div>
 
+<div class="table-wrapper">
 <table>
     <thead>
         <tr>
@@ -42,7 +43,9 @@
         </tr>
     </tbody>
 </table>
+</div>
 
+<div class="table-wrapper">
 <table>
     <thead>
         <tr>
@@ -61,6 +64,7 @@
         </tr>
     </tbody>
 </table>
+</div>
 
 <p>Simple table headless:</p>
 
@@ -81,6 +85,7 @@
 </table>
 </div>
 
+<div class="table-wrapper">
 <table>
     <tbody>
         <tr>
@@ -93,6 +98,7 @@
         </tr>
     </tbody>
 </table>
+</div>
 
 <p>Grid table:</p>