[UPDATE] What are LLMs section has unnecessary jupyter notebook information at the bottom.

I feel line 216-220 are unnecessary under "What are LLMs?" section.

The bottom 3 lines talk about and starts with **"To run this notebook"** while the section doesn't talk about running any Jupyter notebook yet. The notebook links to "Dummy agent Library" section which is further down the course material, leading to misaligned information.

I feel like this 3 lines should be moved at the top of "Dummy agent Library" section or at the end of the module before that "Observe: Integrating Feedback to Reflect and Adapt" as an heads-up to what to come.

@sergiopaniego I see the last changes made by you under [https://github.com/huggingface/agents-course/blame/0d02a7db0d312946cb0f12282d45f2225aaad474/units/en/unit1/what-are-llms.mdx#L216](url)

Let me know if I can go ahead and fix this.