docs: improve installation FAQ's

[SirJamesClarkMaxwell]

Overview: What does this pull request change?

I added it because it is so common that in Windows installation has failed and in almost all cases this approach, presented in the section of docs is working.

Motivation and Explanation: Why and how do your changes improve the library?

Links to added or changed documentation pages

https://docs.manim.community/en/stable/faq/installation.html#different-versions

Further Information and Comments

Reviewer Checklist

• The PR title is descriptive enough for the changelog, and the PR is labeled correctly
• If applicable: newly added non-private functions and classes have a docstring including a short summary and a PARAMETERS section
• If applicable: newly added functions and classes are tested

[JasonGrace2282]

A lot of the stuff here is mentioned in the installation guide. It might be more helpful to include the choco warning in there, and reference the installation docs for things like changing $PATH.

It might be a good idea to also add a troubleshooting section to the installation guide with manim checkhealth and asking users to make sure they only have one python on their system.

Thanks for helping make Manim better ✨

P.S: the linked to the changed documentation is here: https://manimce--3670.org.readthedocs.build/en/3670/faq/installation.html#windows-problem-with-installation-process
not the stable link ;)

[SirJamesClarkMaxwell]

So, maybe I will add a new section here for the simple installation. Without any additional features like choco, scoop, or virtual environments?

[SirJamesClarkMaxwell]

I see one problem. When I was installing manim, with cleaning pytnon installation. I have two version of python. The only thing i did is pure python installation and after that pip install manim. Potentially this is a common problem.

[SirJamesClarkMaxwell]

One thing comes to my mind: why can't we create from 3 files, one for each operating system where all things will be installed manually? ffmpeg could be installed if we download these three files. Manim is trivial to install, the only thing I need to check is Miktex installation from the terminal. The official documentation for MiKTeX said that it is possible. What do you think? For really lazy people, it could potentially be a blessing. Download one file and forget about the whole universe 😀
This setup could contain a flag to set a virtual environment, the Venv one. it wouldn't be complicated.

[JasonGrace2282]

So, maybe I will add a new section here for the simple installation

The installation is already covered on that page, but a section on troubleshooting could help, maybe?

create from 3 files, one for each operating system where all things will be installed manually?

So, an installer? Regardless, that would be a different matter than what the PR is about, so it should be discussed elsewhere.

[SirJamesClarkMaxwell]

1. I have to create a new PR for a simple installer.
2. I see at least one problem: if in official installation, there would be a warning that if something will not work go into this section of docs, undo what you have done, and then do something else. It would annoy me quite a bit. But if you say this is what I should do, I will do it.🫡