Editorial: fix passing wrong exception

Author: marcoscaceres

index.html

@@ -480,7 +480,7 @@ <h2>
           <li data-tests="lock-basic.html">If |document|'s
           {{Document/[[orientationPendingPromise]]}} is not `null`, [=reject
           and nullify the current lock promise=] of |document| with an
-          {{"AbortError"}} {{DOMException}}.
+          {{"AbortError"}}.
           </li>
           <li data-tests="lock-basic.html">Set |document|'s
           {{Document/[[orientationPendingPromise]]}} to [=a new promise=].