Add <code> tags.

docs/_includes/nav/options.html

@@ -3,7 +3,7 @@
     <li>
       <a href="#core-options">Core Options</a>
       <ul class="nav">
-        <li><a href="#data-attributes">Declaring configuration in the data-* attributes</a></li>
+        <li><a href="#data-attributes">Declaring configuration in the <code>data-*</code> attributes</a></li>
         <li><a href="#amd">AMD compatibility</a></li>
         <li><a href="#core-options-display">Display</a></li>
         <li><a href="#core-options-results">Results</a></li>