Update connect-csharp.md

Author: mksuni

articles/postgresql/flexible-server/connect-csharp.md

@@ -20,7 +20,7 @@ For this quickstart you need:
 - An Azure account with an active subscription. [Create an account for free](https://azure.microsoft.com/free).
 - Create an Azure Database for PostgreSQL Flexible server using [Azure portal](./quickstart-create-server-portal.md) <br/> or [Azure CLI](./quickstart-create-server-cli.md) if you do not have one.
 - Use the empty *postgres* database available on the server or create a [new database](./quickstart-create-server-portal.md#connect-to-the-postgresql-database-using-psql).
-- Install the [.NET SDK for your platform](/dotnet/core/install/windows?tabs=net50) (Windows, Ubuntu Linux, or macOS) for your platform.
+- Install the [.NET SDK for your platform](https://dotnet.microsoft.com/download) (Windows, Ubuntu Linux, or macOS) for your platform.
 - Install [Visual Studio](https://www.visualstudio.com/downloads/) to build your project.
 - Install [Npgsql](https://www.nuget.org/packages/Npgsql/) NuGet package in Visual Studio.