Add preconnect and dns-prefetch hints for performance

Author: johnkryptochain

index.html

@@ -12,6 +12,8 @@
   <link rel="icon" type="image/svg+xml" href="icon/logo.svg">
   <link rel="apple-touch-icon" href="icon/256x256.png">
   <title>QuickText</title>
+  <link rel="preconnect" href="https://text-app-nine.vercel.app">
+  <link rel="dns-prefetch" href="https://text-app-nine.vercel.app">
   <link href="third_party/material-components-web/material-components-web.min.css" rel="stylesheet">
   <link href="third_party/material-design-icons/iconfont/material-icons.css" rel="stylesheet">
   <link href="css/app.css" rel="stylesheet">