add missing line in readme

modules/iam-assumable-role-with-oidc/README.md

@@ -39,6 +39,7 @@ No modules.
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
 | <a name="input_allow_self_assume_role"></a> [allow\_self\_assume\_role](#input\_allow\_self\_assume\_role) | Determines whether to allow the role to be [assume itself](https://aws.amazon.com/blogs/security/announcing-an-update-to-iam-role-trust-policy-behavior/) | `bool` | `false` | no |
+| <a name="input_assume_role_source_policies"></a> [assume\_role\_source\_policies](#input\_assume\_role\_source\_policies) | JSON blobs to use as source\_policy\_documents for the assume role policy | `list(string)` | `[]` | no |
 | <a name="input_aws_account_id"></a> [aws\_account\_id](#input\_aws\_account\_id) | The AWS account ID where the OIDC provider lives, leave empty to use the account for the AWS provider | `string` | `""` | no |
 | <a name="input_create_role"></a> [create\_role](#input\_create\_role) | Whether to create a role | `bool` | `false` | no |
 | <a name="input_force_detach_policies"></a> [force\_detach\_policies](#input\_force\_detach\_policies) | Whether policies should be detached from this role when destroying | `bool` | `false` | no |