[Cache] Updates plan information

[angelampcosta]

Summary

Updates plan information about limits.

Documentation checklist

• The documentation style guide has been adhered to.

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PR Change Summary

Updated plan information regarding purge limits and rate limiting in the caching documentation.

• Introduced a new section on purge limits and token bucket rate limiting.
• Updated multiple purge methods to reference the new purge limits section.
• Removed specific API call limits from individual purge method pages.

Modified Files

• src/content/docs/cache/how-to/purge-cache/index.mdx
• src/content/docs/cache/how-to/purge-cache/purge-by-hostname.mdx
• src/content/docs/cache/how-to/purge-cache/purge-by-single-file.mdx
• src/content/docs/cache/how-to/purge-cache/purge-by-tags.mdx
• src/content/docs/cache/how-to/purge-cache/purge_by_prefix.mdx

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[github-actions]

Preview URL: https://04f3b196.preview.developers.cloudflare.com
Preview Branch URL: https://angela-update-plan.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/cache/how-to/purge-cache/	https://angela-update-plan.preview.developers.cloudflare.com/cache/how-to/purge-cache/
https://developers.cloudflare.com/cache/how-to/purge-cache/purge-by-hostname/	https://angela-update-plan.preview.developers.cloudflare.com/cache/how-to/purge-cache/purge-by-hostname/
https://developers.cloudflare.com/cache/how-to/purge-cache/purge_by_prefix/	https://angela-update-plan.preview.developers.cloudflare.com/cache/how-to/purge-cache/purge_by_prefix/
https://developers.cloudflare.com/cache/how-to/purge-cache/purge-by-tags/	https://angela-update-plan.preview.developers.cloudflare.com/cache/how-to/purge-cache/purge-by-tags/
https://developers.cloudflare.com/cache/how-to/purge-cache/purge-by-single-file/	https://angela-update-plan.preview.developers.cloudflare.com/cache/how-to/purge-cache/purge-by-single-file/