typo schema.sql

[masakinihirota]

[vercel[bot]]

@masakinihirota is attempting to deploy a commit to the Vercel Solutions Team on Vercel.

A member of the Team first needs to authorize it.

[leerob]

Thank for you opening a PR to make this example better.

We are sunsetting this example in favor of a newer, more modern SaaS starter example.

You can check it out here -> https://github.com/nextjs/saas-starter