chore: add small description on various auth type

Author: ElasticBottle

apps/playground-web/src/app/connect/in-app-wallet/page.tsx

@@ -33,6 +33,9 @@ function AnyAuth() {
       </div>
       <div className="space-y-2">
         <h3 className="mb-3 font-medium text-lg">Prebuilt UI</h3>
+        <p className="max-w-[600px]">
+          Instant out of the box authentication with a prebuilt UI.
+        </p>
         <CodeExample
           preview={<InAppConnectEmbed />}
           code={`import { inAppWallet } from "thirdweb/wallets";
@@ -72,6 +75,10 @@ function AnyAuth() {
       </div>
       <div className="space-y-2">
         <h3 className="mb-3 font-medium text-lg">Custom Auth and UI</h3>
+        <p className="max-w-[600px]">
+          Customize the login UI and integrate with your existing user base. No
+          limits on customizations and auth methods.
+        </p>
         <CodeExample
           preview={
             <div className="w-1/2">