Fix typo in Releases.md

[ChngYekKhai]

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[DOCS] [MINOR] [Releases.md] - Fix typo in Releases.md

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[charpeni]

@facebook-github-bot shipit

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charpeni is landing this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[react-native-bot]

This pull request was closed by @ChngYekKhai in ed6a5ff.

Once this commit is added to a release, you will see the corresponding version tag below the description at ed6a5ff. If the commit has a single master tag, it is not yet part of a release.