Editorial: Add missing <p>

Author: eladalon1983

index.html

@@ -146,7 +146,7 @@ <h2>
                 with a {{DOMException}} object whose {{DOMException/name}}
                 attribute has the value {{SecurityError}}.</p>
               </li>
-              <li>
+              <li><p>
                 If the [=relevant global object=]'s [=associated `Document`=]'s
                 [=top-level browsing context=]'s
                 <a href="https://wicg.github.io/document-policy/#required-document-policy">