Editorial: use associated Document in place of responsible document (#…

…495)

Closes #493


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<a href="https://pr-preview.s3.amazonaws.com/miketaylr/encrypted-media/pull/495.html" title="Last updated on Mar 16, 2022, 8:51 PM UTC (f2b6eb7)">Preview</a> | <a href="https://pr-preview.s3.amazonaws.com/w3c/encrypted-media/495/13509a1...miketaylr:f2b6eb7.html" title="Last updated on Mar 16, 2022, 8:51 PM UTC (f2b6eb7)">Diff</a>

encrypted-media-respec.html

@@ -684,8 +684,10 @@ <h3><dfn>Navigator</dfn> Extension: <code>requestMediaKeySystemAccess()</code></
             <ol class="method-algorithm">
               <!-- TODO: Convert all parameters to use <code>. -->
 
-              <li><p>If the <a href="https://html.spec.whatwg.org/multipage/webappapis.html#responsible-document">responsible
-              document</a> is not <a>allowed to use</a> the <a><code>encrypted-media</code></a> feature, then throw a "<a
+              <li><p>If <a data-cite="!WEBIDL#this">this</a>'s
+              <a href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global">relevant global object</a>'s
+              <a href="https://html.spec.whatwg.org/multipage/window-object.html#concept-document-window">associated <code>Document</code></a>
+              is not <a>allowed to use</a> the <a><code>encrypted-media</code></a> feature, then throw a "<a
               data-cite="!WEBIDL#securityerror">SecurityError</a>" <a
               data-cite="!WEBIDL#dfn-DOMException">DOMException</a> and abort these steps.</p></li>