Update toc.yml

Author: ProfessorKendrick

articles/partner-solutions/toc.yml

@@ -24,6 +24,8 @@ items:
     href: ./informatica/index.yml
   - name: LambdaTest - HyperExecute (preview)
     href: ./lambda-test/index.yml
+  - name: MongoDB Atlas (preview)
+    href: ./mongo-db/index.yml
   - name: Neon Serverless Postgres (preview)
     href: ./neon/index.yml 
   - name: New Relic