Fix example code (#9)

Author: SevereOverfl0w

README.md

@@ -112,7 +112,7 @@ resource "aws_security_group" "eg_prod_bastion_abc" {
 resource "aws_instance" "eg_prod_bastion_abc" {
   instance_type          = "t1.micro"
   tags                   = "${module.eg_prod_bastion_abc_label.tags}"
-  vpc_security_group_ids = ["${aws_security_group.eg_prod_bastion_abc.id"}]
+  vpc_security_group_ids = ["${aws_security_group.eg_prod_bastion_abc.id}"]
 }
 
 module "eg_prod_bastion_xyz_label" {

README.yaml

@@ -125,7 +125,7 @@ usage: |-
   resource "aws_instance" "eg_prod_bastion_abc" {
     instance_type          = "t1.micro"
     tags                   = "${module.eg_prod_bastion_abc_label.tags}"
-    vpc_security_group_ids = ["${aws_security_group.eg_prod_bastion_abc.id"}]
+    vpc_security_group_ids = ["${aws_security_group.eg_prod_bastion_abc.id}"]
   }
 
   module "eg_prod_bastion_xyz_label" {
@@ -169,4 +169,4 @@ contributors:
   - name: "Andriy Knysh"
     github: "aknysh"
   - name: "Jamie Nelson"
-    github: "Jamie-BitFlight"
+    github: "Jamie-BitFlight"