updates development mode command

Author: anselrognlie

ada-project-docs/setup.md

@@ -9,7 +9,7 @@ The goal for setup is to cover all of the set up needed at the beginning of this
 1. Setting up development and test databases
 1. Setting up a `.env` file
 1. Running `$ flask db init`
-1. Running `$ flask run` and `$ FLASK_ENV=development flask run`
+1. Running `$ flask run` and `$ flask run --debug`
 
 # Requirements
 
@@ -63,14 +63,14 @@ Run `$ flask db init`.
 
 **_After you make your first model in Wave 1_**, run the other commands `flask db migrate` and `flask db upgrade`.
 
-## Run `$ flask run` or `$ FLASK_ENV=development flask run`
+## Run `$ flask run` or `$ flask run --debug`
 
 Check that your Flask server can run with `$ flask run`.
 
 We can run the Flask server specifying that we're working in the development environment. This enables hot-reloading, which is a feature that refreshes the Flask server every time there is a detected change.
 
 ```bash
-$ FLASK_ENV=development flask run
+$ flask run --debug
 ```
 
 **It is highly recommended to run the Flask servers with this command**.