[Docs] Update docs home page section on gen AI Assistance (#1517)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Copilot <[email protected]>

Author: 3 people

vizro-core/docs/index.md

@@ -38,7 +38,11 @@ Vizro is an open-source Python-based toolkit. You can use it to build data visua
 
     [:fontawesome-solid-star: Vizro-MCP :fontawesome-solid-star:](https://vizro.readthedocs.io/projects/vizro-mcp/)
 
-    [Vizro-AI](https://vizro.readthedocs.io/projects/vizro-ai/)
+    [Vizro-AI (deprecated)](https://vizro.readthedocs.io/projects/vizro-ai/)
+
+    [`llms.txt` (stable)](https://vizro.readthedocs.io/llms.txt)
+
+    [`llms-full.txt` (stable)](https://vizro.readthedocs.io/llms-full.txt)
 
 - :fontawesome-solid-book-open:{ .lg .middle } __Find out more__