website: fix two tier AWS example to work with HCL

see #261

website/source/intro/examples/aws.html.markdown

@@ -49,10 +49,10 @@ variable "aws_region" {
 # Ubuntu Precise 12.04 LTS (x64)
 variable "aws_amis" {
     default = {
-        "eu-west-1": "ami-b1cf19c6",
-        "us-east-1": "ami-de7ab6b6",
-        "us-west-1": "ami-3f75767a",
-        "us-west-2": "ami-21f78e11"
+        eu-west-1 = "ami-b1cf19c6"
+        us-east-1 = "ami-de7ab6b6"
+        us-west-1 = "ami-3f75767a"
+        us-west-2 = "ami-21f78e11"
     }
 }
 
@@ -139,7 +139,7 @@ resource "aws_instance" "web" {
     inline = [
         "sudo apt-get -y update",
         "sudo apt-get -y install nginx",
-        "sudo service nginx start",
+        "sudo service nginx start"
     ]
   }
 }