Update index.yml

Author: nitinme

articles/ai-services/language-service/index.yml

@@ -106,3 +106,9 @@ additionalContent:
         links:
         - text: Support and help
           url: ../cognitive-services-support-options.md?context=/azure/ai-services/speech-service/context/context
+      - title: Announced for Deprecation
+        links:
+        - text: Language Understanding
+          url: ../luis/index.yml
+        - text: QnA Maker
+          url: ../qnamaker/index.yml