[Cache] Adds information about normalization

[angelampcosta]

Summary

Adds information about url normalization and custom cache key interaction.

Documentation checklist

• The documentation style guide has been adhered to.

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PR Change Summary

Added information regarding URL normalization and its interaction with custom cache keys in the caching documentation.

• Introduced notes on URL normalization in the cache keys documentation.
• Recommended enabling normalization to origin when using custom cache keys.
• Updated cache rules settings to include normalization guidance.

Modified Files

• src/content/docs/cache/how-to/cache-keys.mdx
• src/content/docs/cache/how-to/cache-rules/settings.mdx

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[github-actions]

Preview URL: https://7fac6b7c.preview.developers.cloudflare.com
Preview Branch URL: https://angela-add-information-about-normalization.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/cache/how-to/cache-keys/	https://angela-add-information-about-normalization.preview.developers.cloudflare.com/cache/how-to/cache-keys/
https://developers.cloudflare.com/cache/how-to/cache-rules/settings/	https://angela-add-information-about-normalization.preview.developers.cloudflare.com/cache/how-to/cache-rules/settings/