[Workers]: Update Docusaurus framework guide

[lauragift21]

Summary

This PR updates the Docusaurus framework guide to include instructions for deploying static assets using Workers.

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• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.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

Updated the Docusaurus framework guide to enhance deployment instructions for static assets using Workers.

• Added detailed steps for creating and deploying a new Docusaurus project on Cloudflare Workers.
• Included instructions for deploying existing static Docusaurus projects.
• Enhanced the guide with additional context about Docusaurus and its features.

Modified Files

• src/content/docs/workers/frameworks/framework-guides/docusaurus.mdx

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