Add `identity` to argument list

website/docs/language/import/index.mdx

@@ -37,6 +37,7 @@ The above `import` block defines an import of the AWS instance with the ID "i-ab
 The `import` block has the following arguments:
  - `to` - The instance address this resource will have in your state file.
  - `id` - A string with the [import ID](#import-id) of the resource, or an expression that evaluates to a string.
+ - `identity` - A resource identity object that uniquely identifies a resource. It is mutually exclusive with `id`.
  - `provider` (optional) - An optional custom resource provider, see [The Resource provider Meta-Argument](/terraform/language/meta-arguments/resource-provider) for details.
 
 If you do not set the `provider` argument, Terraform attempts to import from the default provider.