Fix typo in comment (#335)

Co-authored-by: Emruz Hossain <hossainemruz@gmail.com>

layouts/partials/header.html

@@ -28,5 +28,5 @@
 <link href="https://fonts.googleapis.com/css2?family=Muli:wght@300;400;500;600" rel="stylesheet">
 <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.11.2/css/all.min.css" />
 
-<!--================= fab-icon =========================-->
+<!--================= fav-icon =========================-->
 <link rel="icon" type="image/png" href="{{ $favicon }}" />