Facilitator guide link update

[mcollier]

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chore: "Correct broken link and misspelling"

🧹 Chore Summary

Fix the broken PowerPoint link and misspelling in the Facilitator Guide document.

🔍 Details

• Update to FACILITATOR_GUIDE.md only.

✅ Checklist

• Conventional commit subject (chore: ...)
• Tests added/updated (if needed)
• Docs updated (if needed)
• Linked issues (if any)

📎 Related Issues/PRs

• Related to Facilitator Guide contains invalid link and misspelling #32

[Copilot]

Pull request overview

Confidence: 99%.

This PR fixes documentation issues in the workshop facilitator guide by correcting a misspelled title line and updating the presentation deck link to the correct relative path under docs/presentations/.

Changes:

• Fix misspelling in the guide title (“Facilitator’s Guide”).
• Update the workshop presentation deck link to ./presentations/... so it resolves correctly from docs/FACILITATOR_GUIDE.md.