toc entry for Exchange Online added

Author: MartinPankraz

articles/virtual-machines/workloads/sap/toc.yml

@@ -416,6 +416,10 @@
     href: monitor-sap-on-azure-reference.md
   - name: AMS FAQ
     href: azure-monitor-faq.yml
+- name: Integration with Microsoft Services
+  items:
+  - name: Outbound E-Mail from SAP to Exchange Online
+    href: exchange-online-integration-sap-email-outbound.md
 - name: Reference
   items:
   - name: Azure CLI