Update index.yml (#3959)

* Update index.yml

Fix description, reorder main topics, add Mobile apps

* Update entity-framework/dotnet-data/index.yml

Co-authored-by: Smit Patel <smitpatel@users.noreply.github.com>

* Update entity-framework/dotnet-data/index.yml

Co-authored-by: Smit Patel <smitpatel@users.noreply.github.com>

Co-authored-by: Smit Patel <smitpatel@users.noreply.github.com>

entity-framework/dotnet-data/index.yml

@@ -1,11 +1,11 @@
 ### YamlMime:Hub
 
-title: .NET Data documentation
-summary: .NET is the open source and cross-platform for integrating data, data services and data backends with your applications.
+title: .NET data documentation
+summary: .NET is the open source and cross-platform solution for integrating data, data services, and data backends with your applications.
 brand: dotnet
 
 metadata:
- title: .NET Data documentation
+ title: .NET data documentation
  description: Welcome to the .NET data hub! What data-related task would you like to perform? This page is your gateway to documentation and tutorials for the various ways you interact with data from .NET. 
  ms.product: entity-framework
  ms.topic: hub-page
@@ -17,17 +17,7 @@ metadata:
 # Maximum of 8 items
 highlightedContent:
  # itemType: architecture | concept | deploy | download | get-started | how-to-guide | learn | overview | quickstart | reference | tutorial | video | whats-new
- items:
- # Card
- - title: "LINQ overview"
- itemType: overview
- url: /dotnet/standard/linq
-
- # Card
- - title: "SQLite overview"
- itemType: overview
- url: /dotnet/standard/data/sqlite
-
+ items: 
  # Card
  - title: "Microsoft SQL documentation"
  itemType: reference
@@ -38,6 +28,11 @@ highlightedContent:
  itemType: reference
  url: /azure/cosmos-db/
 
+ # Card
+ - title: "LINQ overview"
+ itemType: overview
+ url: /dotnet/standard/linq
+
  # Card
  - title: "Entity Framework Core (Overview)"
  itemType: overview
@@ -47,6 +42,11 @@ highlightedContent:
  - title: "Entity Framework Core (Tutorial)"
  itemType: learn
  url: /learn/modules/persist-data-ef-core/
+
+ # Card
+ - title: "SQLite overview"
+ itemType: overview
+ url: /dotnet/standard/data/sqlite
 
  # Card
  - title: "What is ML.NET?"
@@ -167,6 +167,16 @@ additionalContent:
  - url: /dotnet/machine-learning/tutorials/
  text: "ML.NET tutorials"
 
+ # Card
+ - title: Mobile apps
+ links:
+ - url: /azure/developer/mobile-apps/azure-mobile-apps/overview
+ text: "Microsoft Datasync Framework (Azure mobile apps)"
+ - url: /azure/developer/mobile-apps/azure-mobile-apps/quickstarts/maui/
+ text: "Build a .NET MAUI mobile app with Azure Mobile Apps"
+ - url: /azure/developer/mobile-apps/azure-mobile-apps/howto/data-sync
+ text: "Offline data sync"
+
  # Card
  - title: ETL and analytics
  links:
@@ -188,6 +198,7 @@ additionalContent:
  text: "Send and receive events from .NET using Azure Event Hubs"
  - url: /dotnet/orleans/overview 
  text: "Distributed .NET apps with Orleans"
+
 
  # Section
  - title: "APIs"