add format to display

index.html

@@ -91,7 +91,8 @@
       <h1>{{title}}</h1>
       <h2>{{author}}</h2>
       <span>{{isbn-13}}</span><br/>
-      <span>{{publisher}}, {{year}}</span>
+      <span>{{publisher}}, {{year}}</span><br/>
+      <span>{{format}}</span>
       <div class="description">
         <p>{{description}}</p>
         {{#notes}}