Update index.md to improve clarity and structure in workshop progression

- Added spacing for better readability between sections.
- Enhanced the description of the workshop progression to emphasize the importance of starting from the beginning for optimal learning.
- Ensured consistent formatting throughout the document for a more polished appearance.

Author: jxnl

docs/workshops/index.md

@@ -74,6 +74,7 @@ How to know if your router works and make it better. Covers metrics, dual-mode U
 Each chapter includes practical exercises you can apply to your own RAG system. They build on each other, so start from the beginning unless you know what you're doing.
 
 The progression:
+
 1. **Getting Started** (Intro & Ch 1): Think like a product, set up evaluation
 2. **Making It Better** (Ch 2): Turn evaluation into improvements
 3. **User Experience** (Ch 3): Get feedback, feel fast, don't break
@@ -88,6 +89,7 @@ You should know what RAG is and have at least played with it. If you're totally
 ## What You'll Have When Done
 
 A RAG system that:
+
 - Gets better from user feedback
 - Routes queries to the right specialized tools
 - Feels fast and responsive
@@ -99,4 +101,4 @@ A RAG system that:
 
 Get access to exclusive discounts and our free 6-day email course on RAG improvement
 
-[Subscribe for updates](https://himprovingrag.com){ .md-button .md-button--primary }
+[Subscribe for updates](https://himprovingrag.com){ .md-button .md-button--primary }