Add explanations for why we have adjusted SYSTEM prompt position for xLAM_8x22b tokenizer.

Rename example/xlam_chat_template_examples_11_21..ipynb to example/xlam_chat_template_examples_11_21.ipynb

Delete example/xlam_chat_template_examples_11_21.ipynb

Update tokenizers chat template and examples output

Update example/xlam_chat_template_examples_11_21.ipynb

Update example/xlam_chat_template_examples_11_21.ipynb

Update xLAM chat template examples

Upload multi_turn_xlam.ipynb