Update index.njk

Author: scottjehl

src/_includes/layouts/index.njk

@@ -9,7 +9,7 @@
         <p>Each test can be run from different locations around the world, on real browsers, over any number of customizable network conditions.</p>
         <p><a href="/getting-started" class="btn">Get started →</a></p>
         </div>
-        <img class="hero" src="/img/wpt-teaser.png" alt="">
+        <img class="hero" src="/img/results-summary.png" alt="">
 
     </div>
     <main class="wide">
@@ -32,4 +32,4 @@
 
     {% include 'footer.html' %}
 </body>
-</html>
+</html>