Fix broken info callout in caching documentation

[mintlify]

Fixed inconsistent callout syntax in the caching guide. Converted broken :::info syntax to proper <Info> component format to match the rest of the file.

Files changed:

• guides/developer/caching.mdx

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Created by Mintlify agent

[github-actions]

📋 Documentation Validation Report

⚠️ Some issues were found in this PR. These are informational warnings and will not block merging.

🔗 Links

✅ All links valid

🖼️ Images

❌ Found image location issues (click to expand)

   📄 guides/how-to-create-scheduled-deliveries.mdx:137 → /Headway.png

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• A page at guides/dashboard.mdx should use images from images/guides/dashboard/
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