Use 11ty url syntax for examples

Author: thisisdano

_includes/sxs/part-seven.html

@@ -35,10 +35,10 @@ <h3 class="step">Remove the project styles CSS link from the page head.</h3>
   <div class="editor">
     <h4 class="filename"><span class="material-icons" aria-hidden="true">description</span> _includes/head.html</h4>
     <pre class="blur">...
-  &lt;link rel="stylesheet" href="&lcub;&lcub; '/assets/css/open-props.css' | relative_url &rcub;&rcub;"&gt;
-  &lt;link rel="stylesheet" href="&lcub;&lcub; '/assets/uswds/css/styles.css' | relative_url &rcub;&rcub;"&gt;</pre><pre class="remove">
-  &lt;link rel="stylesheet" href="&lcub;&lcub; '/assets/css/styles.css' | relative_url &rcub;&rcub;"&gt;</pre><pre class="blur">
-  &lt;script src="&lcub;&lcub; '/assets/uswds/js/uswds-init.min.js' | relative_url &rcub;&rcub;"&gt;&lt;/script&gt;
+  &lt;link rel="stylesheet" href="&lcub;&lcub; '/assets/css/open-props.css' | url &rcub;&rcub;"&gt;
+  &lt;link rel="stylesheet" href="&lcub;&lcub; '/assets/uswds/css/styles.css' | url &rcub;&rcub;"&gt;</pre><pre class="remove">
+  &lt;link rel="stylesheet" href="&lcub;&lcub; '/assets/css/styles.css' | url &rcub;&rcub;"&gt;</pre><pre class="blur">
+  &lt;script src="&lcub;&lcub; '/assets/uswds/js/uswds-init.min.js' | url &rcub;&rcub;"&gt;&lt;/script&gt;
 </head></pre>
   </div>
 <p class="step-description">Save and close the file.</p>