Adjust dev setup in readme and docs

Author: rsmithlal

README.md

@@ -100,11 +100,11 @@ docker compose run --rm app bundle
 Setup the database:
 
 ```bash
-docker compose run --rm app bash -c "cd spec/dummy && rails db:setup"
+docker compose run --rm app rails db:setup
 ```
 
 Run the RSpec tests:
 
 ```bash
-docker compose run --rm app bundle exec rspec
+docker compose run --rm app rspec
 ```

docs/development/dev-setup.md

@@ -41,5 +41,5 @@ docker compose run --rm app rails db:setup
 Run the RSpec tests:
 
 ```bash
-docker compose run --rm app bundle exec rspec
+docker compose run --rm app rspec
 ```