Rename Application Insights experiences to portal experiences

Author: JarrettRenshaw

support/azure/azure-monitor/toc.yml

@@ -74,7 +74,7 @@ items:
             href: app-insights/data/how-to-update-third-party-server-configuration.md
           - name: Node.js
             href: app-insights/data/troubleshoot-app-insights-nodejs.md
-  - name: Application Insights experiences
+  - name: Application Insights portal experiences
     items:
     - name: Troubleshoot Application map issues
       href: app-insights/troubleshoot-application-map-issues.md