fix images

Author: alexwolfmsft

docs/azure/migration/appmod/media/Welcome.png renamed to docs/azure/migration/appmod/media/modernization-welcome.png

@@ -57,19 +57,19 @@ App Modernization for .NET (Preview) supports the following scenarios:
 
     Evaluates your application's readiness for Azure migration in Visual Studio, powered by [AppCAT for .NET](../appcat/install.md).
 
-    ![Assessment](media/overview_assessment.png)
+    ![Assessment](media/overview-assessment.png)
 
 - **Solution recommendations**  
 
     Recommends target Azure services for your application's resource dependencies, tailored to each category of assessed issues.
 
-    ![Solution](media/overview_solution.png)
+    ![Solution](media/overview-solution.png)
 
 - **Code remediation for common issues**
 
     Accelerates code changes for [common modernization issues](predefined-tasks.md) by applying predefined tasks that represent expert best practices.
 
-    ![Apply Task](media/overview_remediation.png)
+    ![Apply Task](media/overview-remediation.png)
 
 - **Automatic fixes for compilation errors:**  
 

docs/azure/migration/appmod/media/Modernize.png renamed to docs/azure/migration/appmod/media/modernize-solution.png

@@ -49,15 +49,15 @@ App Modernization for .NET assessment helps you identify your application readin
 
 1. Clone the [.NET migration copilot samples](https://github.com/Azure-Samples/dotnet-migration-copilot-samples) repository to your local machine.
 
-2. In Visual Studio, open the **Contoso University** solution from the samples repository. 
+2. In Visual Studio, open the **Contoso University** solution from the samples repository.
 
 3. Right-click the solution in Solution Explorer and select **Modernize**.
 
-    :::image type="content" source="media/modernize.png" alt-text="Screenshot that shows the modernize option in the context menu.":::
+    :::image type="content" source="media/modernize-solution.png" alt-text="Screenshot that shows the modernize option in the context menu.":::
 
 4. A GitHub Copilot Chat window opens with a welcome message and predefined options. Select **Migrate to Azure** from the available choices and send it to Copilot.
 
-    :::image type="content" source="media/welcome.png" alt-text="Screenshot that shows the welcome message with migration options.":::
+    :::image type="content" source="media/modernization-welcome.png" alt-text="Screenshot that shows the welcome message with migration options.":::
 
 5. A new Copilot chat session opens and displays the welcome message. The assessment automatically begins and analyzes your project for migration readiness.