Update toc.yml

Author: ryanberg-aquent

support/azure/app-service/toc.yml

@@ -3,7 +3,7 @@
   - name: Connection issues with SSL or TLS
     items:
     - name: Troubleshoot domain and TLS/SSL certificates 
-      href: troubleshoot-domain-and-tls-ssl-certificates.md  
+      href: ./troubleshoot-domain-and-tls-ssl-certificates.md  
     - name: Use Azure App Service Certificate with Azure Front Door
       href: ./connection-issues-with-ssl-or-tls/use-azure-app-service-certificate-with-azure-front-door.md
     - name: Use Azure App Service Certificate with Application Gateway