templates/audio.html in asciidoctor-htmlbook-0.0.3 vs templates/audio.html in asciidoctor-htmlbook-0.0.4

@@ -1,6 +1,6 @@
 <audio src="{{ node.attributes.target }}"
        controls="controls"
-       {% if node.attributes.options contains 'autoplay' %}autoplay="autoplay"{% endif %}
-       {% if node.attributes.options contains 'loop' %}loop="loop"{% endif %}>
+       {% 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>