chore: update cookie options snippet

[nhodges]

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☕️ Reasoning

Corrects the typo (misuse of useSecureCookies, should be true like the first few config blocks)

🧢 Checklist

• Documentation
• Tests
• Ready to be merged

🎫 Affected issues

Please scout and link issues that might be solved by this PR.

Fixes: INSERT_ISSUE_LINK_HERE

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• Security guidelines
• Contributing guidelines
• Code of conduct
• Contributing to Open Source

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