Renaming the Seacells

[Gavin-Lijy]

After your this commit "Renaming SEACells and fixing plotting" 03cd61c, every SEACell nam is like this ':[f'SEACell-{i}' for i in self.A_.argmax(0)]. So you may need to update the result of get_hard_assignments in this tutorial, which would otherwise be confusing. Thank you!

[YH-Zheng]

I also encountered this problem, have you resolved it now？Thanks！