Step18 => commandName="todo" doesn't work

[Eternal-Infinity]

Hi there,

thank you for the great course.
However, I found a bug in it, because of an outdated parameter.
In Step 18 you write to use the attribute "commandName="todo" ", however this doesn't work anymore.
You now need to use modelAttribute="todo"
See here for more information.
Please update the .md-File of Step 18 and, if possible, the video on that part.
Thank you and thanks again for your great tutorial.