Review of the documentation for v0.2-alpha

[samuelrince]

I did a "cross-sectional" review on several pages, but haven't had time to read and edit everything yet.

Here is a non-exhaustive changelogs:

• Add latex plugin and use it for some equation (improves readability IMO)
• Format and typo here and there
• Rework from the ground up the auto-complete page
• Add admonitions blocks for warnings
• Add code blocks syntax highlighting

[samuelrince]

I've added @demeringo to reviewers, because I know you did some work on the documentation. Feel free to check the updates if you have some spare time.

[demeringo]

Great work @samuelrince 🙏.