chore(docs): fix abbreviation typo in dynamodb page

[HayatoW]

☕️ Reasoning

Infrastructure as Code is commonly abbreviated as IaC.

🧢 Checklist

• [X] Documentation
• [X] Tests
• [X] Ready to be merged

🎫 Affected issues

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

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