[FRONTEND] Merch page "Need Kayaking Gear?" footer

[yrska]

🎯 Acceptance Criteria

• Implements the "NEED KAYAKING GEAR?" heading in the large bold left-aligned style.
• Renders the "Check out these retailers:" block with the list of retailer links. (See additional context).

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📊 Definition of Done (DoD)

• Acceptance criteria met
• Agreed tests written
• Agreed documentation in GitHub wiki
• PR reviewed

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🔗 Dependencies

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📚 Additional Context

Links:
(Canoe & Kayak North Shore, FurtherFasterNZ, NRS, Paddle Power, Incept)