#2346 updated to ami that doesn't require accepting marketplace terms

Updated to same ami as in main readme.md which is from community AMIs
and therefore doesn't require accepting the AWS marketplace terms
before using in Packer build.

website/source/intro/getting-started/build-image.html.markdown

@@ -54,7 +54,7 @@ briefly. Create a file `example.json` and fill it with the following contents:
     "access_key": "{{user `aws_access_key`}}",
     "secret_key": "{{user `aws_secret_key`}}",
     "region": "us-east-1",
-    "source_ami": "ami-c65be9ae",
+    "source_ami": "ami-de0d9eb7",
     "instance_type": "t1.micro",
     "ssh_username": "ubuntu",
     "ami_name": "packer-example {{timestamp}}"

website/source/intro/getting-started/parallel-builds.html.markdown

@@ -93,7 +93,7 @@ The entire template should now look like this:
 		"access_key": "{{user `aws_access_key`}}",
 		"secret_key": "{{user `aws_secret_key`}}",
 		"region": "us-east-1",
-		"source_ami": "ami-c65be9ae",
+		"source_ami": "ami-de0d9eb7",
 		"instance_type": "t1.micro",
 		"ssh_username": "ubuntu",
 		"ami_name": "packer-example {{timestamp}}"