fix(concepts): use id attribute for security group (#4020)

themes/default/content/docs/concepts/_index.md

@@ -63,7 +63,7 @@ Programs reside in a *project*, which is a directory that contains source code f
 
 To illustrate these concepts, the following program shows how to create an AWS EC2 security group named `web-sg` with a single ingress rule and a `t2.micro`-sized EC2 instance using that security group.
 
-To use the security group, the EC2 resource requires the security group's ID. Pulumi enables this through the output property `name` on the security group resource. Pulumi understands dependencies between resources and uses the relationships between resources to maximize parallelism and ensures correct ordering when a stack is instantiated.
+To use the security group, the EC2 resource requires the security group's ID. Pulumi enables this through the output property `id` on the security group resource. Pulumi understands dependencies between resources and uses the relationships between resources to maximize parallelism and ensures correct ordering when a stack is instantiated.
 
 Finally, the server's resulting IP address and DNS name are exported as stack outputs so that their values can be accessed through either a CLI command or by another stack.
 

themes/default/static/programs/aws-ec2-instance-with-sg-csharp/Program.cs

@@ -1,4 +1,4 @@
-using Pulumi;
+using Pulumi;
 using Pulumi.Aws.Ec2;
 using Pulumi.Aws.Ec2.Inputs;
 using System.Collections.Generic;
@@ -20,7 +20,7 @@
     var server = new Instance("web-server", new InstanceArgs {
         Ami = "ami-0319ef1a70c93d5c8",
         InstanceType = "t2.micro",
-        VpcSecurityGroupIds = { group.Name }
+        VpcSecurityGroupIds = { group.Id }
     });
 
     return new Dictionary<string, object?>