Toc update for TLS notification

Author: Harsha-CS

articles/site-recovery/toc.yml

@@ -200,6 +200,8 @@
     items:
     - name: Security baseline
       href: /security/benchmark/azure/baselines/site-recovery-security-baseline?toc=/azure/site-recovery/toc.json
+    - name: Transport Layer Security
+      href: transport-layer-security.md
 - name: How-to Guides
   items:
   - name: Azure to Azure disaster recovery