[QUESTION] Attribution for book / github code examples

I am working through this fantastic book, "Hands on ML", and for learning purposes have made modifications to the corresponding source code and uploaded to my github repo. I was wondering how to best attribute copyright/licensing. In my repo ( https://github.com/gbih/ml-notes/tree/main/book_hands_on ) I copied your original Apache license (dated January 2004). Can you tell me if this is the most appropriate action, or should I also add a Example-Notice inside the last notebook cell as well, etc.