Update README.md, fix typos

[BobConanDev]

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Description

I really enjoyed using this project, nice work! Caught a couple of typos in the README though 😛

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References

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Testing

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Checklist

• I have added documentation for new/changed functionality in this PR or in auth0.com/docs
• All active GitHub checks for tests, formatting, and security are passing
• The correct base branch is being used, if not the default branch