Fix: TODO remaining in the tutorial each-block source.

While going through the tutorial, I found the following TODOs in each block tutorial.
<img width="524" alt="Image" src="https://github.com/user-attachments/assets/ad28d7e4-d158-4666-88ab-4c1606221828" />

Can i fix it like this?
<img width="343" alt="Image" src="https://github.com/user-attachments/assets/296c5000-5f37-4055-a7c9-00cf42b952c5" />