Add screen_hint usage for login/signup in FAQ and fix usage in EXAMPLES.md (#1253)

Author: subhankarmaiti

EXAMPLES.md

@@ -341,8 +341,10 @@ In the case of signup, you can add [an additional parameter](https://auth0.com/d
 auth0.webAuth.authorize({
   connection: realm,
   scope: scope,
-  login_hint: email,
-  screen_hint: 'signup', // 👈🏻
+  additionalParameters: {
+    login_hint: email,
+    screen_hint: 'signup', // 👈🏻
+  },
 });
 ```
 

FAQ.md

@@ -11,6 +11,7 @@
 9. [How can I prevent the autogenerated redirect_uri from breaking if the applicationId has mixed cases or special characters in it on Android?](#9-how-can-i-prevent-the-autogenerated-redirect_uri-from-breaking-if-the-applicationId-has-mixed-cases-or-special-characters-in-it-on-android)
 10. [Why doesn't `await authorize()` work on the web? How do I handle login?](#10-why-doesnt-await-authorize-work-on-the-web-how-do-i-handle-login)
 11. [Why do my users get logged out frequently? How do I keep them logged in?](#11-why-do-my-users-get-logged-out-frequently-how-do-i-keep-them-logged-in)
+12. [How can I prompt users to the login page versus signup page?](#12-how-can-i-prompt-users-to-the-login-page-versus-signup-page)
 
 ## 1. How can I have separate Auth0 domains for each environment on Android?
 
@@ -337,3 +338,31 @@ const handleLogin = async () => {
 ```
 
 By including this scope, the SDK will receive and securely store a `refreshToken`. This token will then be used by `getCredentials()` to maintain the user's session across app launches, providing a much smoother user experience.
+
+## 12. How can I prompt users to the login page versus signup page?
+
+If your application has one button for logging in and one button for signing up, you can prompt Auth0 to direct the user to the appropriate authentication page as such:
+
+```js
+const login = async () => {
+  await authorize({
+    scope: ...,
+    audience: ...,
+    additionalParameters: {
+      screen_hint: 'login'
+    }
+  });
+  // continue with login process!
+}
+
+const signup = async () => {
+  await authorize({
+    scope: ...,
+    audience: ...,
+    additionalParameters: {
+      screen_hint: 'signup'
+    }
+  });
+  // continue with signup process!
+}
+```