add why use vizro ai section

vizro-ai/docs/pages/explanation/why-use-vizro-ai.md

@@ -0,0 +1,10 @@
+# Why use Vizro-AI over ChatGPT?
+
+Vizro-AI offers an easy way to turn natural language instructions into professional visualisations, like interactive charts and dashboards, without needing advanced coding skills.
+
+Similar to ChatGPT, Vizro-AI leverages generative AI to understand and execute your instructions in English or any other language. However, there are few advantages of using Vizro-AI over ChatGpt. 
+
+- **It’s tailored for data visualization**: Vizro-AI is specifically designed to create and design charts and dashboards.
+- **It enforces design best practices automatically**: Using Vizro’s themes, your visualizations are built with best practices in mind from the start. 
+- **Instant chart execution**: Vizro-AI generates and executes chart code automatically, allowing you to see the chart output immediately
+- **Export options**: Unlike ChatGPT, Vizro-AI enables you to download charts as interactive HTML or JSON files directly through its chart UI hosted on PyCafe.

vizro-ai/mkdocs.yml

@@ -26,6 +26,7 @@ nav:
       - Disclaimer: pages/explanation/disclaimer.md
       - Safeguard code execution: pages/explanation/safeguard.md
       - Safety in Vizro-AI: pages/explanation/safety-in-vizro-ai.md
+      - Why use Vizro-AI: pages/explanation/why-use-vizro-ai.md
   - Examples:
       - Gallery: https://vizro.mckinsey.com
   #- Contribute: