[UNIT] Final review of Unit 2.1 on smolagents - release 25/2/25

[burtenshaw]

transferred from >> #195

This PR is to review the final changes for the unit on the smolagents library.

Prose to review @pcuenca @simoninithomas @davidberenstein1957

• units/en/unit2/smolagents/code_agents.md
• units/en/unit2/smolagents/introduction.md
• units/en/unit2/smolagents/multi_agent_systems.md
• units/en/unit2/smolagents/retrieval_agents.md
• units/en/unit2/smolagents/tool_calling_agents.md
• units/en/unit2/smolagents/tools.md
• units/en/unit2/smolagents/why_use_smolagents.md

Outstanding work for other PRs

• @sergiopaniego combine vision and browser agents, and mention best open model
• @simoninithomas @sergiopaniego add banner image to introduction [UNIT] smolagents framework - release 24/2/25 #102 (comment)
• @burtenshaw add page on quiz

[HuggingFaceDocBuilderDev]

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[simoninithomas]

@burtenshaw and @sergiopaniego for the notebooks, there's two small things to update:

1. If we can add for each notebook this

Why I say that is that a 10% part of the trafic of Deep RL course come from people who found the notebook online. What I did in DRLC is adding the link of the course and the section.

2. For each section when we start to work on code, even if we put the button on top of the section open with colab. We should add something like this:

-> You can try the code yourself using our colab notebook 👉 link

WDYT 🤔

[simoninithomas]

3. Where we want to place the notebooks, we can instead put them on the agent-course organization: https://huggingface.co/agents-course/notebooks

This way it generates a "open in colab"

But tbh I don't have strong opinion on this 3rd point

[sergiopaniego]

Thanks for the comments @simoninithomas!
I'm already addressing these comments in #217
The reasoning behind adding the banner on the notebooks is super clever! I hadn’t thought of that. Definitely a must-add 😄

By the way, I love the intro diagram you created! Just a small note, it says "Agent Course". Should it be "Agents Course" instead?