Merge pull request #227 from w3c/fix

Replace return with resolve

index.bs

@@ -350,7 +350,7 @@ parallel</a>:
 2. Run the <a>request Picture-in-Picture algorithm</a> with |video|.
 3. If the previous step threw an exception, reject |promise| with that
     exception and abort these steps.
-4. Return |promise| with the <a>Picture-in-Picture window</a> associated with
+4. [=/Resolve=] |promise| with the <a>Picture-in-Picture window</a> associated with
     {{pictureInPictureElement}}.
 
 ## Extensions to <code>Document</code> ## {#document-extensions}
@@ -378,7 +378,7 @@ parallel</a>:
 1. Run the <a>exit Picture-in-Picture algorithm</a>.
 2. If the previous step threw an exception, reject |promise| with that
     exception and abort these steps.
-3. Return |promise|.
+3. [=/Resolve=] |promise|.
 
 ## Extension to <code>DocumentOrShadowRoot</code> ## {#documentorshadowroot-extension}