New and improved Workers Docs

What this post added

This post details significant improvements to the Cloudflare Workers documentation, including a reorganization into four categories (Tutorials, How-to guides, Technical reference, Learning), enhanced formatting for readability (e.g., context sections, sidebars, list-based breakdowns), redesigned pages with new UI components (e.g., tags for examples, difficulty/length for tutorials), improved search functionality, and the addition of a dark mode theme. The underlying documentation engine was also upgraded.