Change Account link page title to 'Discord Authentication Successful'

bot/src/pages/account-linked.html

@@ -4,7 +4,7 @@
     <meta charset="UTF-8">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>Successful link</title>
+    <title>Discord Authentication Successful</title>
     <style>
         @import url('https://fonts.googleapis.com/css2?family=Poppins&display=swap');