Update index.html

Author: annevk

index.html

@@ -1435,8 +1435,8 @@ <h2>
           <li>Set |b| to the result of <a data-lt="extract a byte sequence">extracting a byte
           sequence</a> from the "`data`" member of |eventInitDict|.
           </li>
-          <li>Set the `data` attribute of the event to a new <a>PushMessageData</a> instance with
-          `bytes` set to |b|.
+          <li>Set the `data` attribute of the event to a new {{PushMessageData}} instance whose
+          [=PushMessageData/bytes=] is |b|.
           </li>
         </ol>
         <p>
@@ -1611,7 +1611,7 @@ <h2>
                 {{PushEvent//data}}
               </dt>
               <dd>
-                A new <a>PushMessageData</a> instance whose [=PushMessageData/bytes=] is |bytes|.
+                A new {{PushMessageData}} instance whose [=PushMessageData/bytes=] is |bytes|.
               </dd>
               <dt>
                 {{PushEvent/notification}}