try a different URL for 404 page image

Author: econchick

website/404.html

@@ -4,7 +4,7 @@
 <div class="content">
     <h1 class="text-center">Eeep! Page not found!</h1>
     <div class="center-block">
-        <img class="displayed img-responsive" src="{{ get_asset('images/404image.jpg') }}" width="500px" />
+        <img class="displayed img-responsive" src="assets/images/404image.jpg" width="500px" />
     </div>
     <h3 class="text-center">This URL doesn’t point to anything.</h3>
     <p class="text-center">Is it supposed to? Or is it an old book mark? Please let <a href="mailto:lynn [at] newcoder [dot] io">me</a> know!</p>