Update index.html

Author: tyza66

public/index.html

@@ -21,6 +21,8 @@
 <meta name="msapplication-TileColor" content="#2e2e33">
 <link rel="alternate" type="application/rss+xml" href="http://localhost:1313/index.xml" title="rss">
 <link rel="alternate" hreflang="en" href="http://localhost:1313/">
+<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-3718441900987965"
+     crossorigin="anonymous"></script>
 <noscript>
     <style>
         #theme-toggle,