Update register.html

register.html

@@ -6,6 +6,7 @@
     <title>Register</title>
     <link rel="stylesheet" href="styles1.css">
     <script src="https://accounts.google.com/gsi/client" async defer></script>
+    <script src="https://apis.google.com/js/platform.js" async defer></script>
 </head>
 <body>
     <div class="container">