Update notebook to provide complex sample

[zhanyany16]

Issue #, if available:

Description of changes:

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[isingh09]

Approved

[alvarosevilla95]

@zhanyany16 why did you remove the converse api example here? does it not work well? I imported the model yesterday with the converse tokenizer config, and it's working well except it doesn't output the opening tag. Do you know what that is?

[Sofianel5]

@zhanyany16 in auto_generate - why do you add the generation to user messages (and why only to user messages, not assistant messages)? Is this example only supposed to be for the case where the input is [ { role: user, content: x } ] or will it also work for more complex and long chats? Why not use continue_final_message?