message: use map string instead of map
diff: @@ -40,7 +40,7 @@ func main() {
  // Create a simple web server using the startup script for the instance.
  srv, err := ec2.NewInstance(ctx, "web-server-www", &ec2.InstanceArgs{
  - Tags: pulumi.Map{"Name": pulumi.String("web-server-www")},
  + Tags: pulumi.MapString{"Name": pulumi.String("web-server-www")},
  InstanceType: pulumi.String("t2.micro"), // t2.micro is available in the AWS free tier.
  VpcSecurityGroupIds: pulumi.StringArray{group.ID()},
  Ami: pulumi.String(ami.Id),
  