Design guide streamlined waf deployment across zones apps (#18732)

* Initial commit

* Fix diagrams path

* Adding new diagram and rewriting wording

* Update src/content/docs/reference-architecture/design-guides/streamlined-waf-deployment-across-zones-and-applications.mdx

OK

Co-authored-by: hyperlint-ai[bot] <154288675+hyperlint-ai[bot]@users.noreply.github.com>

* Update src/content/docs/reference-architecture/design-guides/streamlined-waf-deployment-across-zones-and-applications.mdx

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* Update src/content/docs/reference-architecture/design-guides/streamlined-waf-deployment-across-zones-and-applications.mdx

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Co-authored-by: hyperlint-ai[bot] <154288675+hyperlint-ai[bot]@users.noreply.github.com>

* Update src/content/docs/reference-architecture/design-guides/streamlined-waf-deployment-across-zones-and-applications.mdx

OK

Co-authored-by: hyperlint-ai[bot] <154288675+hyperlint-ai[bot]@users.noreply.github.com>

* Update streamlined-waf-deployment-across-zones-and-applications.mdx

Fix broken link

* Fix 2 links to remove redirects

* Apply suggestions from code review

Co-authored-by: Claire W <[email protected]>

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Co-authored-by: Paolo Tagliaferri <[email protected]>
Co-authored-by: hyperlint-ai[bot] <154288675+hyperlint-ai[bot]@users.noreply.github.com>
Co-authored-by: Simon Thorpe <[email protected]>
Co-authored-by: Claire W <[email protected]>