Add step to code block about popovertargetaction

index.html

@@ -2285,7 +2285,7 @@ <h2 class="place"><code>popover</code></h2>
         >
     </section>
 
-    <section class="slide">
+    <!-- <section class="slide">
         <pre class="place ">
             <code class="language-html">
             &lt;button popovertarget="popover-example" popovertargetaction="show"&gt;
@@ -2302,6 +2302,42 @@ <h2 class="place"><code>popover</code></h2>
             &lt;/div&gt;
             </code>
         </pre>
+    </section> -->
+
+    <section class="slide">
+        <pre class="place ">            <code class="language-html hljs language-xml" data-highlighted="yes">
+            <span class="hljs-tag">&lt;<span class="hljs-name">button</span> <span class="hljs-attr">popovertarget</span>=<span class="hljs-string">"popover-example"</span> <span class="hljs-attr">popovertargetaction</span>=<span class="hljs-string">"show"</span>&gt;</span>
+                Открыть
+            <span class="hljs-tag">&lt;/<span class="hljs-name">button</span>&gt;</span>
+            <span class="hljs-tag">&lt;<span class="hljs-name">button</span> <span class="hljs-attr">popovertarget</span>=<span class="hljs-string">"popover-example"</span> <span class="hljs-attr">popovertargetaction</span>=<span class="hljs-string">"hide"</span>&gt;</span>
+                Закрыть
+            <span class="hljs-tag">&lt;/<span class="hljs-name">button</span>&gt;</span>
+            <span class="hljs-tag">&lt;<span class="hljs-name">button</span> <span class="hljs-attr">popovertarget</span>=<span class="hljs-string">"popover-example"</span> <span class="hljs-attr">popovertargetaction</span>=<span class="hljs-string">"toggle"</span>&gt;</span>
+                Тоггл
+            <span class="hljs-tag">&lt;/<span class="hljs-name">button</span>&gt;</span>
+            <span class="hljs-tag">&lt;<span class="hljs-name">div</span> <span class="hljs-attr">popover</span> <span class="hljs-attr">id</span>=<span class="hljs-string">"popover-example"</span>&gt;</span>
+                Привет! Я поповер!
+            <span class="hljs-tag">&lt;/<span class="hljs-name">div</span>&gt;</span>
+            </code>
+        </pre>
+    </section>
+
+    <section class="slide">
+        <pre class="place ">            <code class="language-html hljs language-xml" data-highlighted="yes">
+            <span class="hljs-tag"><span class="muted">&lt;<span class="hljs-name">button</span> <span class="hljs-attr">popovertarget</span>=<span class="hljs-string">"popover-example"</span> </span><span class="hljs-attr">popovertargetaction</span>=<span class="hljs-string">"show"</span><span class="muted"></div>&gt;</span></span>
+                <span class="muted">Открыть
+            <span class="hljs-tag">&lt;/<span class="hljs-name">button</span>&gt;</span></span>
+            <span class="hljs-tag"><span class="muted">&lt;<span class="hljs-name">button</span> <span class="hljs-attr">popovertarget</span>=<span class="hljs-string">"popover-example"</span> </span><span class="hljs-attr">popovertargetaction</span>=<span class="hljs-string">"hide"</span><span class="muted"></div>&gt;</span></span>
+                <span class="muted">Закрыть
+            <span class="hljs-tag">&lt;/<span class="hljs-name">button</span>&gt;</span></span>
+            <span class="hljs-tag"><span class="muted">&lt;<span class="hljs-name">button</span> <span class="hljs-attr">popovertarget</span>=<span class="hljs-string">"popover-example"</span> </span><span class="hljs-attr">popovertargetaction</span>=<span class="hljs-string">"toggle"</span><span class="muted"></div>&gt;</span></span>
+                <span class="muted">Тоггл
+            <span class="hljs-tag">&lt;/<span class="hljs-name">button</span>&gt;</span></span>
+            <span class="muted"><span class="hljs-tag">&lt;<span class="hljs-name">div</span> <span class="hljs-attr">popover</span> <span class="hljs-attr">id</span>=<span class="hljs-string">"popover-example"</span>&gt;</span>
+                Привет! Я поповер!
+            <span class="hljs-tag">&lt;/<span class="hljs-name">div</span>&gt;</span></span>
+            </code>
+        </pre>
     </section>
 
     <section class="slide">