genai: claude is now available!!

Author: s-sajid-ali

docs/genai/03_external_llms/01_catalogue.md

@@ -6,13 +6,13 @@ We currently facilitate access to the following externally hosted LLMs:
 -   Claude Sonnet (4.0 & 3.7)
 -   Claude Opus 4.0
 
-## OpenAI
+## OpenAI (via Azure OpenAI)
 -   gpt-4o-mini
 -   gpt-4o
 -   o4-mini
 -   text-embedding-3-small
 
-## VertexAI
+## Google (via GCP VertexAI)
 -   gemini-2.5 models (pro, flash, flash-lite)
 -   gemini-2.0 models (flash, flash-lite)
 -   gemini-embedding-001