Add new FT testing page to TOC.

Author: voutilad

articles/ai-services/openai/toc.yml

@@ -178,7 +178,10 @@ items:
     items:
       - name: Fine-tuning your model
         href: ./how-to/fine-tuning.md
-        displayName: finetuning, fine-tuning 
+        displayName: finetuning, fine-tuning
+      - name: Deploy for testing
+        href: ./how-to/fine-tuning-test.md
+        displayName: finetuning, fine-tuning
       - name: Deploy your fine-tuned model
         href: ./how-to/fine-tuning-deploy.md 
         displayName: finetuning, fine-tuning