[Cache] Adds APIRequest component to Cache docs

[angelampcosta]

Summary

Adds APIRequest component to Cache docs.

Documentation checklist

• The documentation style guide has been adhered to.

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PR Change Summary

Enhanced Cache documentation by integrating the APIRequest component for improved API examples.

• Added APIRequest component to Cache Reserve documentation for API examples.
• Updated Vary for Images documentation to use APIRequest for API calls.
• Modified purge cache examples to utilize APIRequest for clarity and consistency.
• Incorporated APIRequest component in Tiered Cache documentation for API interactions.

Modified Files

• src/content/docs/cache/advanced-configuration/cache-reserve.mdx
• src/content/docs/cache/advanced-configuration/vary-for-images.mdx
• src/content/docs/cache/how-to/purge-cache/purge-cache-key.mdx
• src/content/docs/cache/how-to/tiered-cache.mdx

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[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
/src/content/docs/cache/	@angelampcosta, @cloudflare/pcx-technical-writing

[github-actions]

Preview URL: https://1cf73317.preview.developers.cloudflare.com
Preview Branch URL: https://angela-apirequest-cache.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/cache/how-to/purge-cache/purge-cache-key/	https://angela-apirequest-cache.preview.developers.cloudflare.com/cache/how-to/purge-cache/purge-cache-key/
https://developers.cloudflare.com/cache/advanced-configuration/vary-for-images/	https://angela-apirequest-cache.preview.developers.cloudflare.com/cache/advanced-configuration/vary-for-images/
https://developers.cloudflare.com/cache/how-to/tiered-cache/	https://angela-apirequest-cache.preview.developers.cloudflare.com/cache/how-to/tiered-cache/
https://developers.cloudflare.com/cache/advanced-configuration/cache-reserve/	https://angela-apirequest-cache.preview.developers.cloudflare.com/cache/advanced-configuration/cache-reserve/