Updated copyright year

New year, new hard-coded HTML copyright update!

Author: raduweiss

index.html

@@ -230,7 +230,7 @@
                     <a href="#home">
                         <img src="img/[email protected]" alt="Firecracker logo">
                     </a>
-                    <div>©2018 - 2019, Amazon Web Services, Inc or its affiliates. All rights reserved.</div>
+                    <div>©2018 - 2020, Amazon Web Services, Inc or its affiliates. All rights reserved.</div>
                 </div>
             </footer>
         </section>