update README.md

Author: anmolnagpal

README.md

@@ -155,7 +155,7 @@ Here is examples of how you can use this module in your inventory structure:
 | ebs\_block\_device | Additional EBS block devices to attach to the instance. | `list(any)` | `[]` | no |
 | ebs\_device\_name | Name of the EBS device to mount. | `list(string)` | <pre>[<br>  "/dev/xvdb",<br>  "/dev/xvdc",<br>  "/dev/xvdd",<br>  "/dev/xvde",<br>  "/dev/xvdf",<br>  "/dev/xvdg",<br>  "/dev/xvdh",<br>  "/dev/xvdi",<br>  "/dev/xvdj",<br>  "/dev/xvdk",<br>  "/dev/xvdl",<br>  "/dev/xvdm",<br>  "/dev/xvdn",<br>  "/dev/xvdo",<br>  "/dev/xvdp",<br>  "/dev/xvdq",<br>  "/dev/xvdr",<br>  "/dev/xvds",<br>  "/dev/xvdt",<br>  "/dev/xvdu",<br>  "/dev/xvdv",<br>  "/dev/xvdw",<br>  "/dev/xvdx",<br>  "/dev/xvdy",<br>  "/dev/xvdz"<br>]</pre> | no |
 | ebs\_iops | Amount of provisioned IOPS. This must be set with a volume\_type of io1. | `number` | `0` | no |
-| ebs\_optimized | If true, the launched EC2 instance will be EBS-optimized. | `bool` | `false` | no |
+| ebs\_optimized | If true, the launched EC2 instance will be EBS-optimized. | `bool` | `true` | no |
 | ebs\_volume\_enabled | Flag to control the ebs creation. | `bool` | `false` | no |
 | ebs\_volume\_size | Size of the EBS volume in gigabytes. | `number` | `30` | no |
 | ebs\_volume\_type | The type of EBS volume. Can be standard, gp2 or io1. | `string` | `"gp2"` | no |