chore: move Zen Browser guidelines to developers section

[Hephaest]

Backgrounds

Hi there,

I found the current documentation structure is kinda confusing. As a web browser developer, I naturally navigated to the Developer section when looking for build instructions:

However, the building guideline is apparently not in here:

Eventually, I discovered the Building Guidelines are located under Getting Started — a section I thought was intended for general users wanting to explore the browser, rather than developers looking to build it from source 😂:

Although the homepage does include an entry point to the guide, I feel several developers have still overlooked it so they opened the issue on the GitHub...

Purpose

Given that, this PR is to help developers find the building guidelines easily (and with a minimal redirect fallback solution). The demo is shown below ⬇️

Screen.Recording.2025-06-28.at.13.49.29.mov

This redirection is simple, effective, and fully accessible.

Screen.Recording.2025-06-28.at.13.59.46.mov

Notes to Reviewers

Please feel free to push commits or make updates directly to this PR. I’m still new to the project, so I might have missed a few things — happy to learn and improve! 🙌🏼

[Hephaest]

Delay 2s to improve accessibility.

Refer to: https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/meta#refresh

[list-jonas]

Great work on the PR! I actually considered a similar change myself. From a technical perspective, the only thing I'd suggest is moving the guides directory to be a descendant of (docs) to show the navigation, and perhaps a descendant of (redirects) or something similar for better organization and to allow for more additions in the future.

I'll probably also refactor the redirect into a component at some point.

[Hephaest]

Haha Thanks! @list-jonas

Yeah, I agree with you but that will be a huge code change 😂 I’ll hand the refactor over to you folks, since my bandwidth and context are limited.

If you want to tweak my PR and enhance the handling, just go ahead. I'm totally OK!

Or if I can just leave a TODO comment before merging the PR, just let me know 😊