Editorial: add oldid for "super-reference" (#2220)

spec.html

@@ -3762,7 +3762,7 @@ <h1>The Reference Record Specification Type</h1>
             <tr>
               <td>[[ThisValue]]</td>
               <td>any ECMAScript language value or ~empty~</td>
-              <td>If not ~empty~, the Reference Record represents a property binding that was expressed using the `super` keyword; it is called a <dfn id="super-reference-record">Super Reference Record</dfn> and its [[Base]] value will never be an Environment Record. In that case, the [[ThisValue]] field holds the *this* value at the time the Reference Record was created.</td>
+              <td>If not ~empty~, the Reference Record represents a property binding that was expressed using the `super` keyword; it is called a <dfn id="super-reference-record" oldids="super-reference">Super Reference Record</dfn> and its [[Base]] value will never be an Environment Record. In that case, the [[ThisValue]] field holds the *this* value at the time the Reference Record was created.</td>
             </tr>
           </tbody>
         </table>