Draft: Document Alias Preview URLs

[WillTaylorDev]

Summary

Screenshots (optional)

Documentation checklist

• The documentation style guide has been adhered to.
• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.
• Files which have changed name or location have been allocated redirects.

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PR Change Summary

Documented the new Alias Preview URLs feature for Workers, enhancing the existing preview URL documentation.

• Introduced the concept of Alias Preview URLs, allowing users to assign human-readable aliases to Worker versions.
• Updated the documentation to include details on creating and managing Alias Preview URLs.
• Clarified the differences between Version-Prefixed and Alias Preview URLs.

Modified Files

• src/content/docs/workers/configuration/multipart-upload-metadata.mdx
• src/content/docs/workers/configuration/previews.mdx

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[github-actions]

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

Pattern	Owners
/src/content/docs/workers/	@cloudflare/workers-docs, @GregBrimble, @irvinebroque, @mikenomitch, @WalshyDev, @cloudflare/deploy-config, @cloudflare/pcx-technical-writing, @ToriLindsay, @cloudflare/wrangler
/src/content/docs/workers/wrangler/	@cloudflare/wrangler, @irvinebroque, @ToriLindsay, @cloudflare/pcx-technical-writing

[github-actions]

Preview URL: https://b0c2561a.preview.developers.cloudflare.com
Preview Branch URL: https://willtaylor-alias-preview-urls.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/workers/configuration/previews/	https://willtaylor-alias-preview-urls.preview.developers.cloudflare.com/workers/configuration/previews/
https://developers.cloudflare.com/workers/wrangler/commands/	https://willtaylor-alias-preview-urls.preview.developers.cloudflare.com/workers/wrangler/commands/
https://developers.cloudflare.com/workers/configuration/multipart-upload-metadata/	https://willtaylor-alias-preview-urls.preview.developers.cloudflare.com/workers/configuration/multipart-upload-metadata/

[GregBrimble]

Possible conflict with --alias, the bundle flag for aliasing modules?

[GregBrimble]

Suggested change

	Aliased preview URLs let you assign a persistent, readable alias to a specific Worker version. These are useful for linking to stable previews across environments. These types of preview URLs follow the same pattern as other preview URLs:
	Aliased preview URLs let you assign a persistent, readable alias to a specific Worker version. These are useful for linking to stable previews across many versions. These types of preview URLs follow the same pattern as other preview URLs:

I'm vetoing the word "environment" 😅