Update index.html

Co-authored-by: Ted Thibodeau Jr <tthibodeau@openlinksw.com>

Author: danielpeintner

index.html

@@ -1312,7 +1312,7 @@ <h2>The <dfn>ActionInteractionOutput</dfn> interface</h2>
       Should we allow pause/resume also? TD has no notion of it.
     </p>
     <section><h3>The <dfn>status()</dfn> function</h3>
-      Reports the status of an <a>Action</a> (one of <code>running</code>, <code>success</code> or <code>error</code>) or rejects on error. The method MUST run the following steps:
+      Reports the status of an <a>Action</a> (one of <code>running</code>, <code>success</code>, or <code>error</code>), or rejects on error. The method MUST run the following steps:
       <ol>
         <li>
           Return a {{Promise}} |promise:Promise| and execute the next steps