Updated Concepts navigation

docs/modules/ROOT/nav-concepts.adoc

@@ -1,13 +1,10 @@
-* xref:concepts/index.adoc[Concepts]
-** xref:concepts/release-services/con_release-services-overview.adoc[Release services]
-** xref:concepts/enterprise-contract/con_enterprise-contract-overview.adoc[Enterprise contract]
-** xref:concepts/testing_applications/index.adoc[Testing applications]
+* Concepts
+** Testing applications
 *** xref:concepts/testing_applications/con_test-overview.adoc[Overview of test components]
 *** xref:concepts/testing_applications/surface-level_tests.adoc[Surface-level tests]
 *** xref:concepts/testing_applications/adding_new_tests.adoc[Add a tew test]
 *** xref:concepts/testing_applications/configuring_tests.adoc[Configuring tests]
 ** xref:concepts/RenovateBot/index.adoc[RenovateBot]
-** xref:concepts/environments/index.adoc[Environments]
 ** xref:concepts/java-build-service/java-build-service.adoc[Java build service]
 ** xref:concepts/java-build-service/java-build-service-components.adoc[Java build service components]
 
@@ -16,4 +13,7 @@ Adam Kaplan said that the index.adoc for Pipelines, and presumably the other doc
 ** xref:concepts/pipelines/index.adoc[Pipelines]
 *** xref:concepts/pipelines/persister.adoc[Persister component]
 *** xref:concepts/pipelines/pipeline_concepts.adoc[Pipeline concepts]
+** xref:concepts/release-services/con_release-services-overview.adoc[Release services]
+** xref:concepts/enterprise-contract/con_enterprise-contract-overview.adoc[Enterprise contract]
+** xref:concepts/environments/index.adoc[Environments]
 ////

docs/modules/ROOT/pages/concepts/enterprise-contract/con_enterprise-contract-overview.adoc

@@ -23,6 +23,6 @@ To learn more about {ProductName} EC, see the following pages:
 
 To learn about other {ProductName} streams that help you with your containerized development needs, see the following pages:
 
-* xref:concepts/testing_applications/index.adoc[Application testing]
+* xref:concepts/testing_applications/con_test-overview.adoc[Application testing]
 * xref:concepts/release-services/con_release-services-overview.adoc[Release strategy]
 * xref:concepts/pipelines/index.adoc[Pipelines]

docs/modules/ROOT/pages/concepts/release-services/con_release-services-overview.adoc

@@ -26,6 +26,6 @@ Inside a managed workspace, SREs rely on the release strategy to deploy your app
 
 To learn about other {ProductName} components that can help you with containerized development, see the following:
 
-* xref:concepts/testing_applications/index.adoc[Testing applications] 
+* xref:concepts/testing_applications/con_test-overview.adoc[Testing applications] 
 * xref:concepts/enterprise-contract/con_enterprise-contract-overview.adoc[Enterprise contract] 
 * xref:concepts/pipelines/index.adoc[Pipelines]

docs/modules/ROOT/pages/index.adoc

@@ -42,7 +42,7 @@ xref:getting-started/index.adoc[Getting started]:: Get started with {ProductName
 []
 xref:how-to-guides/index.adoc[*How-to guides*]:: Put {ProductName} to work for you.
 []
-xref:concepts/index.adoc[*Concepts*]:: Learn about technical and conceptual information.
+xref:concepts/testing_applications/con_test-overview.adoc[*Concepts*]:: Learn about technical and conceptual information.
 []
 xref:glossary/index.adoc[*Glossary*]:: View a list of relevant terms and their definitions. 
 []