Update code snippets in the tutorials

[BKinya]

There are some minor code mismatches in the tutorials. This PR updates the snippets with correct code to ensure accuracy and improve the learning experience for users

[CLAassistant]

All committers have signed the CLA.

[rjrjr]

@BKinya thanks! It's so hard to catch all the typos.

@steve-the-edwards there is some kind of auth token nonsense failing CI here. I can go ahead and merge anyway, but I can hold off if you want to investigate first.