[HANDS-ON BUG] Llama approval process isn't necessary for running Unit 1 Notebook now, but the documentation says it is required

[John6666cat]

Describe the bug
#510
Although the above change means that approval for the Llama model is no longer required to use the Notebook, there seems to be some confusion because the documentation has not been updated.
https://github.com/huggingface/agents-course/blob/main/units/en/unit1/what-are-llms.mdx

You also need to request access to the Meta Llama models.

https://discuss.huggingface.co/t/which-ai-model-we-will-be-using-in-this-course/159351
#536

Llama may be necessary in other parts of the course, so I will raise it as an issue for now.