This [code](https://github.com/rusty-crewmates/substrate-tutorials/blob/main/exercises/ex00-testing/flipper/src/lib.rs#L18-20) in exercise-0 needs to be changed as per FRAME v3. File (code referenced): https://github.com/rusty-crewmates/substrate-tutorials/blob/main/exercises/ex00-testing/flipper/src/lib.rs#L18-20 **Before**: <img width="402" alt="image" src="https://user-images.githubusercontent.com/16472948/234212365-5b02f87f-05c3-4403-afd2-0977b201f370.png"> **After**: <img width="273" alt="image" src="https://user-images.githubusercontent.com/16472948/234212505-a214341a-e024-4431-9821-cfed700daab1.png">
This code in exercise-0 needs to be changed as per FRAME v3.
File (code referenced): https://github.com/rusty-crewmates/substrate-tutorials/blob/main/exercises/ex00-testing/flipper/src/lib.rs#L18-20
Before:
After:
