Move indexing to conceptual section

Author: seesharprun

articles/cosmos-db/mongodb/TOC.yml

@@ -145,6 +145,8 @@
         - name: Azure Cosmos DB resource model
           displayName: collection, document
           href: ../resource-model.md
+        - name: Indexing
+          href: indexing.md
         - name: Partitioning (sharding)
           items:
             - name: Partitioning overview
@@ -357,8 +359,6 @@
               href: find-request-unit-charge.md
             - name: Change streams
               href: change-streams.md
-            - name: Manage data indexing
-              href: indexing.md
             - name: Time to live
               href: time-to-live.md
             - name: Use multi-document transactions

articles/cosmos-db/mongodb/indexing.md

@@ -4,7 +4,7 @@ description: This article presents an overview of Azure Cosmos DB indexing capab
 ms.service: cosmos-db
 ms.subservice: mongodb
 ms.devlang: javascript
-ms.topic: how-to
+ms.topic: conceptual
 ms.date: 12/2/2022
 author: gahl-levy
 ms.author: gahllevy