Update build.gradle (#32382)
Update build.gradle (#32382)

Summary:
This is a proposal to adjust the in-code documentation to clarify the semantics of the `enableHermes` variable.

This fixes https://github.com/facebook/react-native-website/issues/2813.

## Changelog

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[Android] [Fixed] - Clarified in-code documentation in the template's `android/app/build.gradle`.

Pull Request resolved: https://github.com/facebook/react-native/pull/32382

Test Plan: This is just an update to documentation, no need for tests.

Reviewed By: yungsters

Differential Revision: D31550133

Pulled By: Huxpro

fbshipit-source-id: d60e5d256e1ffaf8556710b75582f1ae1c0f1fd3

janicduplessis/react-native,janicduplessis/react-native,javache/react-native,javache/react-native,janicduplessis/react-native,janicduplessis/react-native,facebook/react-native,javache/react-native,facebook/react-native,janicduplessis/react-native,javache/react-native,javache/react-native,facebook/react-native,javache/react-native,facebook/react-native,facebook/react-native,facebook/react-native,facebook/react-native,javache/react-native,janicduplessis/react-native,javache/react-native,facebook/react-native,janicduplessis/react-native,javache/react-native,facebook/react-native,janicduplessis/react-native