Add and update values in .env.sample

[brettski]

Three values need to be added to the .env.sample to ensure people have the needed settings.

PUBLIC_THAT_API=https://api.that.tech

NODE_ENV=development
PUBLIC_VERCEL_ENV=development

and update:

PUBLIC_AUTH0_BASE_URL=http://localhost:5173
PUBLIC_AUTH0_ISSUER_BASE_URL=https://auth.that.tech

to

PUBLIC_AUTH0_BASE_URL=http://localhost:5173/
PUBLIC_AUTH0_ISSUER_BASE_URL=https://auth.that.tech/

[theClarkSell]

Ironically, the readme needs to be looked at too. I'm not even sure it's valid since we stood up the repo

[brettski]

Oh that's right, I meant to add for that, e.g. the number of issues is pointing to THAT.us and needs to be updated to thatconference.com.