Minor change to the Readme for Firebase Console project name

[jeff9315]

I'm REALLY glad this was redone so I can start to get a handle on some best practices when using Firestore database ... prior to the real course getting done. I can at least contribute by helping to find documentation changes and minor bug fixes.

Minor fix for anyone to perform or for Andrea to make minor change in the Readme:

Andrea could change the Readme: In the readme it says: Create a new project with the Firebase console but it should probably say Create a new project with the Firebase console with the name starter-architecture-flutter.

Users: When creating the project in in the Firebase Console. either

• use the project name: starter-architecture-flutter or
• change the .firebaserc in the app to the name you chose in the Firebase Console or
• just delete .firebaserc and flutterfire will ask you which project to use when you run flutterfire config

{
  "projects": {
    "default": "my-project-name-in-lower-case"
  }
}