Fix typo in hermes-utils.rb

[hSATAC]

Summary:

Fix minor typo.

Changelog:

[Internal] [Fixed] - Fix typo in hermes-utils.rb

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[facebook-github-bot]

@rshest has imported this pull request. If you are a Meta employee, you can view this in D80329212.

[facebook-github-bot]

@rshest merged this pull request in e89df64.

[react-native-bot]

This pull request was successfully merged by @hSATAC in e89df64

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