Align with DOM DocumentFragment adoption changes

Complements whatwg/dom#819.

Tests: web-platform-tests/wpt#22504.

source

@@ -61311,8 +61311,8 @@ interface <dfn interface>HTMLTemplateElement</dfn> : <span>HTMLElement</span> {
   contents</span>:</p>
 
   <ol>
-   <li><p>Let <var>doc</var> be the <code>template</code> element's <span>node document</span>'s <span>appropriate template contents owner
-   document</span>.</p></li>
+   <li><p>Let <var>doc</var> be the <code>template</code> element's <span>node document</span>'s
+   <span>appropriate template contents owner document</span>.</p></li>
 
    <li><p>Create a <code>DocumentFragment</code> object whose <span>node document</span> is
    <var>doc</var> and <span data-x="concept-DocumentFragment-host">host</span> is the
@@ -61368,15 +61368,15 @@ interface <dfn interface>HTMLTemplateElement</dfn> : <span>HTMLElement</span> {
 
   <ol>
    <li>
-    <p>Let <var>doc</var> be <var>node</var>'s <span>node document</span>'s
-    <span>appropriate template contents owner document</span>.</p>
+    <p>Let <var>doc</var> be <var>node</var>'s <span>node document</span>'s <span>appropriate
+    template contents owner document</span>.</p>
 
     <p class="note"><var>node</var>'s <span>node document</span> is the <code>Document</code> object
     that <var>node</var> was just adopted <em>into</em>.</p>
    </li>
 
-   <li><p><span data-x="concept-node-adopt">Adopt</span> <var>node</var>'s
-   <span>template contents</span> (a <code>DocumentFragment</code> object) into <var>doc</var>.</p></li>
+   <li><p><span data-x="concept-node-adopt">Adopt</span> <var>node</var>'s <span>template
+   contents</span> into <var>doc</var>, with true.</p></li>
   </ol>
 
   <p>The <dfn attribute for="HTMLTemplateElement"><code