Fix the class listed for the submit event in the events index

Closes whatwg#6948.

source

@@ -125023,7 +125023,7 @@ INSERT INTERFACES HERE
 
     <tr> <!-- submit -->
      <td> <dfn event for="HTMLElement"><code data-x="event-submit">submit</code></dfn>
-     <td> <code>Event</code>
+     <td> <code>SubmitEvent</code>
      <td> <code>form</code> elements
      <td> Fired at a <code>form</code> element when it is <span data-x="concept-form-submit">submitted</span>
 
@@ -126229,6 +126229,7 @@ INSERT INTERFACES HERE
   Hiroyuki USHITO,
   Hitoshi Yoshida,
   Hongchan Choi, <!-- hoch on GitHub -->
+  王华 (Hua Wang), <!-- PaperStrike on GitHub -->
   Hugh Bellamy,
   Hugh Guiney,
   Hugh Winkler,