Refactor events

[lewtun]

[HuggingFaceDocBuilderDev]

The documentation is not available anymore as the PR was closed or merged.

[lbourdois]

Hi @lewtun To finish this draft, I suggest you the following text for a section about "Live sessions and workshops":

# Live sessions and workshops

In addition to the two days of live presentations to celebrate the release of the second part of the course, other live sessions and workshops related to the course took place. 

You can find the list of live sessions below:
For the first session, Sylvain goes through chapter 1 of the course with you, explaining it step by step. 
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In the second session, it is Lewis' turn to present chapter 2.  
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Because this chapter 2 is so cool, Sylvain has also made an explanation of it! 
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For the session related to chapter 3, Lewis returns to comment on it.
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Finally, Omar concludes the live sessions related to the first part of the course by tackling chapter 4.
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For the live workshops, you can find the list below:
In the first workshop, Merve welcomes Lewis to discuss section 7 of chapter 7 about [question anwsering]( https://huggingface.co/course/chapter7/7?fw=pt). 

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For the second workshop, Merve hosts Leandro to talk about chapter 7, section 6 on [training a causal language model from scratch]( https://huggingface.co/course/chapter7/6?fw=pt) with a application with [CodeParrot](https://huggingface.co/codeparrot).
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