Summary:
Fixed some typos in the comment.
## Changelog
[Internal] [Fixed] - Fixed typo in the comments
Pull Request resolved: https://github.com/facebook/react-native/pull/28269
Test Plan: Changes are only made in the comments, so test is not necessary.
Reviewed By: cpojer
Differential Revision: D20342637
Pulled By: shergin
fbshipit-source-id: f6e7dd538ee54c43e1570c35e1f8c4502054e328