Fix Documentation Typo: 'retreive' → 'retrieve'

[tinchomengo]

Changes

• Documentation only: Correct a typo in the root README.md under the LocalAuthenticationOptions example.
  • Changed "Authenticate to retreive your credentials" → "Authenticate to retrieve your credentials".
• Why is this important? Having a typo in the main README.md could generate some of the following issues:
  • Automated Linting/Spell-Check Warnings
  • Translation/Localization Inconsistency
  • SEO & Linking Issues

References

• No existing issue; this is a small, standalone spelling fix in the example snippet.

Testing

• Manually verified the README.md renders with the corrected spelling on GitHub.
• No changes to functionality; no new tests required and all existing tests continue to pass.

Checklist

• I have read the Auth0 general contribution guidelines
• All existing and new tests complete without errors (n/a – documentation change)
• All active GitHub checks have passed

[subhankarmaiti]

Hi @tinchomengo, thanks for contributing! Would you be able to rebase this branch and bring it to a state where we can proceed with merging?