Update redshift_subnet_group.html.markdown

Author: mootpt

website/source/docs/providers/aws/r/redshift_subnet_group.html.markdown

@@ -39,7 +39,6 @@ resource "aws_redshift_subnet_group" "foo" {
 	name = "foo"
 	subnet_ids = ["${aws_subnet.foo.id}", "${aws_subnet.bar.id}"]
 }
-`
 ```
 
 ## Argument Reference
@@ -62,4 +61,4 @@ Redshift subnet groups can be imported using the `name`, e.g.
 
 ```
 $ terraform import aws_redshift_subnet_group.testgroup1 test-cluster-subnet-group
-```
+```