Update index.html

index.html

@@ -82,7 +82,7 @@ <h2 id="getting-started">Getting started</h2>
         To get started with fart.css, include the following line in the
         <code>&lt;head&gt;</code> of your HTML file:
       </p>
-      <pre><code>&lt;link rel="stylesheet" href="https://css.fart.tools" /&gt;</code></pre>
+      <pre><code>&lt;link rel="stylesheet" type="text/css" href="https://css.fart.tools" /&gt;</code></pre>
       <p>
         From there, you can use the classes and styles provided by the fart.css
         CSS library.