Fix llama3.1 chat template

[fzyzcjy]

It seems https://huggingface.co/meta-llama/Llama-3.1-8B-Instruct/blob/main/tokenizer_config.json says:

i.e. July 26 instead July 23.

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[AllentDan]

Not a big deal. https://www.llama.com/docs/model-cards-and-prompt-formats/llama3_1 gives 23 July 2024

[fzyzcjy]

Interesting! Then llama itself is inconsistent about this...

[lvhan028]

Hi, @fzyzcjy
Thanks for your contribution
This PR didn't pass the unit test.
Can you fix it?
https://github.com/InternLM/lmdeploy/actions/runs/12192401746/job/34297273083?pr=2862

[fzyzcjy]

Sure, done!