Fix GitHub link

Author: alexmalyshev

index.html

@@ -24,7 +24,7 @@ <h2>This page still under construction...</h2>
           <a href="mailto:lex.malyshev@gmail.com">Email</a>
         </div>
         <div class="link">
-          <a href="www.github.com/alexmalyshev">GitHub</a>
+          <a href="https://www.github.com/alexmalyshev">GitHub</a>
         </div>
       </div>
     </footer>