Update configuration with disk_ext option

website/source/docs/disks/configuration.html.md

@@ -29,9 +29,11 @@ Vagrant Disks has several options that allow users to define and attach disks to
 
 ## Disk Options
 
-* `name` (string) - Optional argument to give the disk a name
-* `type` (symbol) - The type of disk to manage. This option defaults to `:disk`. Please read the provider specific documentation for supported types.
+* `disk_ext` (string) - Optional argument that defines what kind of file
+extension a disk should have. For a list of supported disk extensions, please check
+the specific provider being used.
 * `file` (string) - Optional argument that defines a path on disk pointing to the location of a disk file.
+* `name` (string) - Optional argument to give the disk a name
 * `primary` (boolean) - Optional argument that configures a given disk to be the "primary" disk to manage on the guest. There can only be one `primary` disk per guest.
 * `provider_config` (hash) - Additional provider specific options for managing a given disk.
 
@@ -41,6 +43,7 @@ Vagrant Disks has several options that allow users to define and attach disks to
       - The provider name followed by a double underscore, and then the provider specific option for that disk
     + `{providername: {diskoption: value}, otherprovidername: {diskoption: value}`
       - A hash where the top level key(s) are one or more providers, and each provider keys values are a hash of options and their values.
+* `type` (symbol) - The type of disk to manage. This option defaults to `:disk`. Please read the provider specific documentation for supported types.
 
     **Note:** More specific examples of these can be found under the provider specific disk page. The `provider_config` option will depend on the provider you are using. Please read the provider specific documentation for disk management to learn about what options are available to use.