update index

Author: zhiyuanliang-ms

articles/azure-app-configuration/TOC.yml

@@ -210,6 +210,8 @@
       href: howto-targetingfilter.md
     - name: ASP.NET Core
       href: howto-targetingfilter-aspnet-core.md
+    - name: JavaScript
+      href: howto-targetingfilter-javascript.md
   - name: Use variant feature flags
     items:
     - name: Overview

articles/azure-app-configuration/index.yml

@@ -149,8 +149,6 @@ landingContent:
           url: quickstart-feature-flag-javascript.md
       - linkListType: tutorial
         links: 
-        - text: Use feature flags in Spring Boot
-          url: use-feature-flags-spring-boot.md
         - text: Enable conditional features with feature filters
           url: howto-feature-filters.md
         - text: Enable features on a schedule
@@ -159,10 +157,8 @@ landingContent:
           url: howto-targetingfilter.md
         - text: Use variant feature flags
           url: howto-variant-feature-flags.md
-        - text: Use variant feature flags in Python
-          url: howto-variant-feature-flags-python.md
-        - text: Use variant feature flags in JavaScript
-          url: howto-variant-feature-flags-javascript.md
+        - text: Enable telemetry for feature flags
+          url: howto-telemetry.md
       - linkListType: reference
         links:
         - text: Overview