Update index.html

Author: MaxYT5184

index.html

@@ -5,6 +5,7 @@
   <title>Home - School SMP</title>
   <link rel="stylesheet" href="style.css">
   <link rel="icon" href="favicon.ico" type="image/x-icon">
+  <link rel="manifest" href="/manifest.json"> <!-- Manifest link -->
 
   <!-- Google AdSense -->
   <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-3309273645696464"