Update quickstart-csharp.md

Author: aahill

articles/ai-services/agents/includes/quickstart-csharp.md

@@ -4,7 +4,7 @@ author: aahill
 ms.author: aahi
 ms.service: azure-ai-agent-service
 ms.topic: include
-ms.date: 01/15/2025
+ms.date: 03/28/2025
 ---
 
 | [Reference documentation](/dotnet/api/overview/azure/ai.projects-readme) | [Samples](https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/ai/Azure.AI.Projects/tests/Samples) | [Library source code](https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/ai/Azure.AI.Projects) | [Package (NuGet)](https://www.nuget.org/packages/Azure.AI.Projects/) |
@@ -38,7 +38,7 @@ ms.date: 01/15/2025
 Install the .NET package to your project. For example if you're using the .NET CLI, run the following command.
 
 ```console
-dotnet add package Azure.AI.Projects
+dotnet add package Azure.AI.Projects --prerelease
 dotnet add package Azure.Identity
 ```