Fix COOP enforcement to use response, not request, URL

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@@ -91502,7 +91502,7 @@ location.href = '#foo';</code></pre>
        <li><p>Set <var>coopEnforcementResult</var> to the result of <span
        data-x="coop-enforce">enforcing the response's cross-origin opener policy</span> given
        <var>navigable</var>'s <span data-x="nav-bc">active browsing context</span>,
-       <var>request</var>'s <span data-x="concept-request-url">URL</span>,
+       <var>response</var>'s <span data-x="concept-response-url">URL</span>,
        <var>responseOrigin</var>, <var>responseCOOP</var>, <var>coopEnforcementResult</var> and
        <var>request</var>'s <span data-x="concept-request-referrer">referrer</span>.</p></li>