adding example env

[ethanpaneraa]

Type of change

• Bug fix
• New feature
• Breaking change
• Documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published

[vercel]

Deployment failed with the following error:

If `rewrites`, `redirects`, `headers`, `cleanUrls` or `trailingSlash` are used, then `routes` cannot be present.

Learn More: https://vercel.link/mix-routing-props