Update android-quiz.md

1. Fixed the typo error "WWhat"
2. Added answer.

Reference Answer: https://stackoverflow.com/questions/151777/how-to-save-an-activity-state-using-save-instance-state#:~:text=From%20Android%20technical%20resources%3A,when%20the%20Activity%20is%20restarted.

android/android-quiz.md

@@ -173,8 +173,8 @@
 - [ ] The test runner facilitates parallelization of test classes by providing for each test class.
 - [ ] The test runner facilitates interacting with visible elements on a device, regardless of the activity or fragment that has focus.
 
-#### Q16. WWhat allows you to properly restore a user's state when an activity is restarted?
-- [ ] the onSaveInstance()method
+#### Q16. What allows you to properly restore a user's state when an activity is restarted?
+- [x] the onSaveInstance()method
 - [ ] all of these answers
 - [ ] persistent storage
 - [ ] ViewModel objects