Fix typsetting and content of llm_tutorial_optimization.md
Author: cyyever
Pull request: yes

# What does this PR do?
Fix latex, markdown `*` escaping and white space. Some errors in the content are also fixed.
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Comments:
@stevhliu Many changes in this PR. I have verified the typesetting by converting it into html. 
There are other files with Latex typesetting issues, will be fixed in later PRs.

The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/transformers/pr_41172). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

I tried `pandoc` to convert it to pdf, the math formulas worked well. 

The changes look like this which makes it looks more confusing I think. May be better to revert to how it was previously and try to find a better solution

<img width="912" height="286" alt="Screenshot 2025-09-29 at 8 48 21 AM" src="https://github.com/user-attachments/assets/92754232-548c-434c-b732-58d9272aa895" />


@stevhliu Still waiting the `$...$` syntax support.

> The changes look like this which makes it looks more confusing I think. May be better to revert to how it was previously and try to find a better solution
> 
> <img alt="Screenshot 2025-09-29 at 8 48 21 AM" width="912" height="286" src="https://private-user-images.githubusercontent.com/59462357/495268463-92754232-548c-434c-b732-58d9272aa895.png?jwt=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.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.qr6WeuKc-_abm8Cu3t6UYSHoLgr4lcfiMX3-cREjxvI">

Now it renders correctly with latest doc-build.