Update the README instructions for creating the development environment

[nsunami]

I was trying to run the app locally, but I was unable to do so following the current instructions.

For example, the current README says that I have to run npx prisma migrate dev, but doing so would try to read the environment variable stored in the .env file, not in the .env.local file. (So I believe the correct way to do so is via blitz sub-command,npx blitz prisma migrate dev)

I want to update the README.

[chartgerink]

You're correct! Go ahead and update this :)

[github-actions]

This issue is stale because it has been open 60 days with no activity.