Fix typo

[bennycode]

Changes

Turning "heeds" into "needs"

References

Issue was found here: https://auth0.github.io/auth0-spa-js/classes/Auth0Client.html#checkSession

Testing

• [ ] This change adds unit test coverage
• [ ] This change adds integration test coverage
• [x] This change has been tested on the latest version of the platform/language

Checklist

• [x] I have read the Auth0 general contribution guidelines
• [x] I have read the Auth0 Code of Conduct
• [x] All code quality tools/guidelines have been run/followed