Merge pull request #1747 from OneSignal/fix/migration_guide_updates_getOptedInAsync

Update Migration Guide

Author: jennantilla

MIGRATION_GUIDE.md

@@ -250,7 +250,7 @@ The Push Subscription namespace is accessible via `OneSignal.User.pushSubscripti
 | `OneSignal.User.pushSubscription.getOptedIn()`                                                      | _**DEPRECATED**<br>use `getOptedInAsync`_ |
 | `await OneSignal.User.pushSubscription.getIdAsync()`                                                           | _The readonly push subscription ID._                                                                                                                                                                                                                                                                                                                                             |
 | `await OneSignal.User.pushSubscription.getTokenAsync()`                                                        | _The readonly push token._                                                                                                                                                                                                                                                                                                                                                       |
-| `await OneSignal.User.pushSubscription.getOptedInAsync()`                                                      | _Gets a boolean value indicating whether the current user is opted in to push notifications. This returns `true` when the app has notifications permission and `optedOut` is called. **_Note:_** Does not take into account the existence of the subscription ID and push token. This boolean may return `true` but push notifications may still not be received by the user._ |
+| `await OneSignal.User.pushSubscription.getOptedInAsync()`                                                      | _Gets a boolean value indicating whether the current user is opted in to push notifications. This returns `true` when the app has notifications permission and `optOut()` is **not** called. **_Note:_** Does not take into account the existence of the subscription ID and push token. This boolean may return `true` but push notifications may still not be received by the user._ |
 | `OneSignal.User.pushSubscription.optIn()`                                                                 | _Call this method to receive push notifications on the device or to resume receiving of push notifications after calling `optOut`. If needed, this method will prompt the user for push notifications permission._                                                                                                                                                               |
 | `OneSignal.User.pushSubscription.optOut()`                                                                | _If at any point you want the user to stop receiving push notifications on the current device (regardless of system-level permission status), you can call this method to opt out._                                                                                                                                                                                              |
 | `OneSignal.User.pushSubscription.addEventListener('change', listener: (event) => void)`<br><br>**_See below for usage_** | _Adds the listener to run when the push subscription changes._                                                                                                                                   |