Mark decorative 404 home icon as aria-hidden

Author: Copilot

404.html

@@ -13,7 +13,7 @@ <h1>Oops! Page not found</h1>
                 </div>
                 <div class="error-actions" style="text-align: center;">
                     <p><img src="https://octodex.github.com/images/scubatocat.png" alt="Octocat" width="300" height="300"></p>
-                    <a href="/" class="btn btn-primary btn-lg"><span class="fa fa-home" role="img" aria-label="Home" title="Home"></span>
+                    <a href="/" class="btn btn-primary btn-lg"><span class="fa fa-home" aria-hidden="true" title="Home"></span>
                             Take Me Home </a>
                 </div>
             </div>