added the article to the TOC

Author: spelluru

articles/lab-services/TOC.yml

@@ -52,6 +52,8 @@
       href: devtest-lab-concepts.md
     - name: Best practices for distributed and collaborative development
       href: best-practices-distributive-collaborative-development-environment.md    
+    - name: DevTest Labs and DevOps
+      href: devtest-lab-dev-ops.md
     - name: Scenarios
       items:
       - name: Popular scenarios for using DevTest Labs