fix toc

Author: lgayhardt

articles/ai-studio/toc.yml

@@ -312,7 +312,7 @@ items:
     items:
     - name: Evaluations concepts
       items:
-      - name: Evaluation of Generative AI Models and AI Applications
+      - name: Evaluation of generative AI models and AI applications
         href: concepts/evaluation-approach-gen-ai.md
       - name: Evaluation and monitoring metrics for generative AI
         href: concepts/evaluation-metrics-built-in.md