templates/audio.html in asciidoctor-htmlbook-0.0.5 vs templates/audio.html in asciidoctor-htmlbook-0.0.6

@@ -1,5 +1,6 @@
-<audio src="{{ node.attributes.target }}"
+<audio {% if node.id %}id="{{ node.id }}"{% endif %}
+       src="{{ node.attributes.target }}"
        controls="controls"
        {% if node.attributes.autoplay-option %}autoplay="autoplay"{% endif %}
        {% if node.attributes.loop-option %}loop="loop"{% endif %}>
   <em>Sorry, the &lt;auido&gt; element not supported in your reading system.</em>
 </audio>