Updating TOC with new dynamic conf tutorial

Author: lisaguthrie

articles/azure-app-configuration/TOC.yml

@@ -35,6 +35,8 @@
       href: enable-dynamic-configuration-aspnet-core.md
     - name: Enable dynamic configuration in a .NET Core app
       href: enable-dynamic-configuration-dotnet-core.md
+    - name: Enable dynamic configuration in a .NET Framework app
+      href: enable-dynamic-configuration-dotnet.md      
     - name: Use feature flags in a .NET Core app
       href: use-feature-flags-dotnet-core.md
     - name: Use feature flags in a Spring Boot app