Merge pull request #88789 from diberry/0917-qna-toc

[Cogsvcs] QnA Maker - portal

Author: Jak-MS

articles/cognitive-services/QnAMaker/toc.yml

@@ -226,3 +226,5 @@
     href: https://docs.microsoft.com/search/index?search=QnAMaker
   - name: Blog
     href: https://blog.botframework.com/category/QnAMaker/
+- name: QnA Maker portal
+  href: https://www.qnamaker.ai