Update README.md (#1183)

Co-authored-by: Subhankar Maiti <35273200+subhankarmaiti@users.noreply.github.com>

Author: tinchomengo

README.md

@@ -553,7 +553,7 @@ The `Auth0` class constructor now accepts a new parameter, which is an instance
 ```tsx
 import Auth0 from 'react-native-auth0';
 const localAuthOptions: LocalAuthenticationOptions = {
-  title: 'Authenticate to retreive your credentials',
+  title: 'Authenticate to retrieve your credentials',
   subtitle: 'Please authenticate to continue',
   description: 'We need to authenticate you to retrieve your credentials',
   cancelTitle: 'Cancel',
@@ -577,7 +577,7 @@ const auth0 = new Auth0({
 import { Auth0Provider } from 'react-native-auth0';
 
 const localAuthOptions: LocalAuthenticationOptions = {
-  title: 'Authenticate to retreive your credentials',
+  title: 'Authenticate to retrieve your credentials',
   subtitle: 'Please authenticate to continue',
   description: 'We need to authenticate you to retrieve your credentials',
   cancelTitle: 'Cancel',