fix: update the 404 docs link to latest version of Builder Documentation

[0xMillz]

Description

I replaced all the broken docs links in the repo that were 404s with @mulfdev's docs from 2 months ago. I did not write or edit the documentation myself, but I believe it is the most accurate and up-to-date information about Builder Protocol, and it is certainly better than a 404.

Motivation & context

I and several others at the BuilderDAO, as well as many users, prefer non-broken links to docs.

It changes a click to any link to the documentation from a HTTP 404 to a HTTP 2XX with content that is what a user would expect.

Code review

Type of change

• [X] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• [X] I have done a self-review of my own code
• [X] Any new and existing tests pass locally with my changes
• [X] My changes generate no new warnings (lint warnings, console warnings, etc)

[vercel[bot]]

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