Tutorial 1: Authentication - highlight model to add "User"

[jacebenson]

on /authentication, maybe highlight the user model to add on schema.primsa

[jacebenson]

I can't seem to do a clean update the js should be ````javascript {28,36} above the schema.prisma file block

[jtoar]

Good call! I've included this in redwoodjs/redwood#4781.

[jacebenson]

Thanks!