Update guessnum.html

Author: usrx215

website/guessnum.html

@@ -4,6 +4,7 @@
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>Guess the Number Game</title>
+  <link rel="icon" type="image/x-icon" href="https://usrx215.github.io/scgames/gtn.png">
   <link rel="preconnect" href="https://fonts.googleapis.com">
   <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
   <link href="https://fonts.googleapis.com/css2?family=Ubuntu:ital,wght@0,300;0,400;0,500;0,700;1,300;1,400;1,500;1,700&display=swap" rel="stylesheet">
@@ -100,4 +101,4 @@ <h1>Guess the Number Game</h1>
     }
   </script>
 </body>
-</html>
+</html>