Summary:
> Explain the **motivation** for making this change. What existing problem does the pull request solve?
Just fixed a typo.
Feel free to make the change directly in the repo without my credit if the process is easier than accepting this PR.
Closes https://github.com/facebook/react-native/pull/11164
Differential Revision: D4236963
Pulled By: mkonicek
fbshipit-source-id: 72c059596216602f9ab30dea6eb5f9cdbf89d31b