Docs updated with new config option

website/source/docs/builders/amazon-chroot.html.markdown

@@ -121,6 +121,9 @@ each category, the available configuration keys are alphabetized.
   of the source AMI will be attached. This defaults to "" (empty string),
   which forces Packer to find an open device automatically.
 
+* `enhanced_networking` (boolean) - Enable enhanced networking (SriovNetSupport) on
+  HVM-compatible AMIs.
+
 * `mount_path` (string) - The path where the volume will be mounted. This is
   where the chroot environment will be. This defaults to
   `packer-amazon-chroot-volumes/{{.Device}}`. This is a configuration

website/source/docs/builders/amazon-ebs.html.markdown

@@ -95,6 +95,9 @@ each category, the available configuration keys are alphabetized.
 * `availability_zone` (string) - Destination availability zone to launch instance in.
   Leave this empty to allow Amazon to auto-assign.
 
+* `enhanced_networking` (boolean) - Enable enhanced networking (SriovNetSupport) on
+  HVM-compatible AMIs.
+
 * `iam_instance_profile` (string) - The name of an
   [IAM instance profile](http://docs.aws.amazon.com/IAM/latest/UserGuide/instance-profiles.html)
   to launch the EC2 instance with.

website/source/docs/builders/amazon-instance.html.markdown

@@ -133,6 +133,9 @@ each category, the available configuration keys are alphabetized.
 * `bundle_vol_command` (string) - The command to use to bundle the volume.
   See the "custom bundle commands" section below for more information.
 
+* `enhanced_networking` (boolean) - Enable enhanced networking (SriovNetSupport) on
+  HVM-compatible AMIs.
+
 * `iam_instance_profile` (string) - The name of an
   [IAM instance profile](http://docs.aws.amazon.com/IAM/latest/UserGuide/instance-profiles.html)
   to launch the EC2 instance with.