docs(cli): clarify tagline noun per Copilot feedback (#126, #127)

[samuelds]

Summary

Honore le feedback Copilot sur PRs #126 et #127 : (out of 68+ total) → (out of 68+ official bricks).

Why

• Le mot "total" sans nom était ambigu ("total what?")
• Inconsistant avec le bullet plus bas du README qui dit "68+ official bricks"
• Cohérence terminologique pure

Test plan

• git diff develop..HEAD -- README.md : 1 seul mot changé (total → official bricks)
• CI passe
• Threads Copilot sur docs(cli): clarify benchmark coverage in tagline (29 of 68+ bricks) #126 et release: sync develop → main (README tagline clarification) #127 à resolve après ce merge

Bypass Check Changeset Present

Label skip-changeset ajouté. Justification : changement README pur.

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Updates the README tagline wording to remove ambiguity about what “68+” refers to, aligning terminology with the rest of the README and prior PR feedback.

Changes:

• Replaces “(out of 68+ total)” with “(out of 68+ official bricks)” in the README tagline for clarity and consistency.

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