docs: fix 1 broken link(s) via archive.org (#6502)

[mirkosalvato1-ctrl]

Fixes 1 broken outbound link(s) in docs using archived snapshots (Wayback).

LinkMedic · confidence 0.66

• README.md: https://docs.openaev.io/latest/development/environment_ubunt… → archive

Related to #6502

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[Copilot]

Pull request overview

Updates the repository’s top-level README to replace a now-broken outbound documentation link with an archived (Wayback) snapshot, keeping the “Development” section usable for contributors.

Changes:

• Replaces the environment_ubuntu documentation link with a Wayback Machine snapshot URL.

[RomuDeuxfois]

@mirkosalvato1-ctrl thanks for your contribution but can you explain the goal of this PR ?