docs: add cache to comparison document + pricing fixes

[shahednasser]

Closes DX-2219

Summary

What — What changes are introduced in this PR?

• Add cache details in comparison doc
• Fix links in pricing page + button styling
• Add link to Cloud from homepage

Why — Why are these changes relevant or necessary?

Please provide answer here

How — How have these changes been implemented?

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Testing — How have these changes been tested, or how can the reviewer test the feature?

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Examples

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// Example usage

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Checklist

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• The changes are covered by relevant tests
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• I have linked the related issue(s) if applicable

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Additional Context

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Latest commit: 372644c

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Project	Deployment	Preview	Comments	Updated (UTC)
api-reference	Building	Preview	Comment	Oct 22, 2025 3:02pm
cloud-docs	Ready	Preview	Comment	Oct 22, 2025 3:02pm
docs-v2	Ready	Preview	Comment	Oct 22, 2025 3:02pm

5 Skipped Deployments

Project	Deployment	Preview	Comments	Updated (UTC)
api-reference-v2	Ignored	Preview		Oct 22, 2025 3:02pm
docs-ui	Ignored	Preview		Oct 22, 2025 3:02pm
medusa-docs	Ignored	Preview		Oct 22, 2025 3:02pm
resources-docs	Ignored			Oct 22, 2025 3:02pm
user-guide	Ignored	Preview		Oct 22, 2025 3:02pm