chore: updates

public/index.html

@@ -7,6 +7,7 @@
   <meta name="theme-color" content="#000000" />
   <meta name="description" content="add up everything you input" />
   <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
+
   <!--
       manifest.json provides metadata used when your web app is installed on a
       user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
@@ -22,6 +23,7 @@
       Learn how to configure a non-root public URL by running `npm run build`.
     -->
   <title>Rustchat Web APP</title>
+  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.5.0/styles/github.min.css">
   <style>
     html {
       font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif !important;