[Analytics] Adds understanding sampling docs

[angelampcosta]

Summary

Adds understanding sampling docs.

Documentation checklist

• The documentation style guide has been adhered to.

[hyperlint-ai]

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PR Change Summary

Added documentation on understanding sampling in Cloudflare Analytics, including its methodology, benefits, and trustworthiness.

• Introduced a new document on understanding sampling in Cloudflare Analytics.
• Updated sidebar order for several analytics-related pages.
• Clarified the impact of sampling on data accuracy and performance.

Modified Files

• src/content/docs/analytics/account-and-zone-analytics/index.mdx
• src/content/docs/analytics/analytics-engine/index.mdx
• src/content/docs/analytics/analytics-integrations/index.mdx
• src/content/docs/analytics/dashboards.mdx
• src/content/docs/analytics/faq/index.mdx
• src/content/docs/analytics/graphql-api/index.mdx
• src/content/docs/analytics/network-analytics/index.mdx

Added Files

• src/content/docs/analytics/sampling.mdx

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[github-actions]

Preview URL: https://9809ca76.preview.developers.cloudflare.com
Preview Branch URL: https://angela-sampling-docs.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/analytics/sampling/	https://angela-sampling-docs.preview.developers.cloudflare.com/analytics/sampling/
https://developers.cloudflare.com/analytics/account-and-zone-analytics/	https://angela-sampling-docs.preview.developers.cloudflare.com/analytics/account-and-zone-analytics/
https://developers.cloudflare.com/analytics/analytics-engine/	https://angela-sampling-docs.preview.developers.cloudflare.com/analytics/analytics-engine/
https://developers.cloudflare.com/analytics/analytics-integrations/	https://angela-sampling-docs.preview.developers.cloudflare.com/analytics/analytics-integrations/
https://developers.cloudflare.com/analytics/dashboards/	https://angela-sampling-docs.preview.developers.cloudflare.com/analytics/dashboards/
https://developers.cloudflare.com/analytics/faq/	https://angela-sampling-docs.preview.developers.cloudflare.com/analytics/faq/
https://developers.cloudflare.com/analytics/graphql-api/	https://angela-sampling-docs.preview.developers.cloudflare.com/analytics/graphql-api/
https://developers.cloudflare.com/analytics/network-analytics/	https://angela-sampling-docs.preview.developers.cloudflare.com/analytics/network-analytics/