[Chore] Rename products to directory

[kodster28]

Summary

We list more than just products on /products/, we should broaden the URL and make the underlying things match. We've already done this with the page title.

[github-actions]

This PR requires additional review attention because it affects the following areas:

Partials

This PR updates partial files, which are pieces of content used across multiple files in our Render component.

• email-security/reference-detect-phish - view affected files

[github-actions]

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

Pattern	Owners
*.ts	@cloudflare/developer-advocacy, @kristianfreeman, @kodster28, @pedrosousa, @haleycode, @GregBrimble, @KianNH, @WalshyDev
/public/__redirects	@GregBrimble, @KianNH, @pedrosousa, @WalshyDev, @cloudflare/pcx-technical-writing
/src/components/	@cloudflare/developer-advocacy, @kristianfreeman, @kodster28, @pedrosousa, @marciocloudflare, @haleycode, @maxvp, @GregBrimble, @KianNH, @WalshyDev
*.astro	@cloudflare/developer-advocacy, @kristianfreeman, @kodster28, @pedrosousa, @haleycode, @GregBrimble, @KianNH, @WalshyDev
*	@cloudflare/pcx-technical-writing
/src/content/docs/dns/	@RebeccaTamachiro, @cloudflare/pcx-technical-writing
/src/content/docs/fundamentals/	@dcpena, @cloudflare/pcx-technical-writing
/src/content/docs/learning-paths/	@cloudflare/pcx-technical-writing
/src/content/docs/reference-architecture/	@securitypedant, @haleycode, @cloudflare/pcx-technical-writing
/src/content/docs/waf/	@pedrosousa, @cloudflare/firewall, @cloudflare/pcx-technical-writing

[github-actions]

Preview URL: https://88979afa.preview.developers.cloudflare.com
Preview Branch URL: https://products-to-directory.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/learning-paths/workers/devplat/intro-to-devplat/	https://products-to-directory.preview.developers.cloudflare.com/learning-paths/workers/devplat/intro-to-devplat/
https://developers.cloudflare.com/fundamentals/manage-domains/	https://products-to-directory.preview.developers.cloudflare.com/fundamentals/manage-domains/
https://developers.cloudflare.com/dns/get-started/	https://products-to-directory.preview.developers.cloudflare.com/dns/get-started/
https://developers.cloudflare.com/developer-spotlight/application-guide/	https://products-to-directory.preview.developers.cloudflare.com/developer-spotlight/application-guide/
https://developers.cloudflare.com/fundamentals/api/how-to/make-api-calls/	https://products-to-directory.preview.developers.cloudflare.com/fundamentals/api/how-to/make-api-calls/
https://developers.cloudflare.com/reference-architecture/architectures/security/	https://products-to-directory.preview.developers.cloudflare.com/reference-architecture/architectures/security/
https://developers.cloudflare.com/waf/tools/lists/	https://products-to-directory.preview.developers.cloudflare.com/waf/tools/lists/