fix favicon urls

Author: jean-gui

templates/_common-head.html.twig

@@ -2,8 +2,8 @@
 <meta name="viewport" content="width=device-width, initial-scale=1">
 
 <link rel="home" href="https://www.w3.org/"/>
-<link rel="icon" type="image/png" href="https://www.w3.org/assets/logos/w3c/favicon-32.png"/>
-<link rel="apple-touch-icon" type="image/png" href="https://www.w3.org/assets/logos/w3c/favicon-180.png"/>
+<link rel="icon" type="image/png" href="https://www.w3.org/assets/logos/w3c-2025/favicons/favicon-32.png"/>
+<link rel="apple-touch-icon" type="image/png" href="https://www.w3.org/assets/logos/w3c-2025/favicons/favicon-180.png"/>
 
 <link rel="stylesheet" href="{{ absolute_url(asset('styles/core.css?ver=1.5', 'website-2021')) }}" media="screen"/>