docs: update description of karpenter node_iam_role_use_name_prefix

It currently implies in the variable description that it will use the controller IAM role name (`iam_role_name`), but the code actually uses the `node_iam_role_name` for the prefix, if enabled.

modules/karpenter/README.md

@@ -170,7 +170,7 @@ No modules.
 | <a name="input_node_iam_role_path"></a> [node\_iam\_role\_path](#input\_node\_iam\_role\_path) | IAM role path | `string` | `"/"` | no |
 | <a name="input_node_iam_role_permissions_boundary"></a> [node\_iam\_role\_permissions\_boundary](#input\_node\_iam\_role\_permissions\_boundary) | ARN of the policy that is used to set the permissions boundary for the IAM role | `string` | `null` | no |
 | <a name="input_node_iam_role_tags"></a> [node\_iam\_role\_tags](#input\_node\_iam\_role\_tags) | A map of additional tags to add to the IAM role created | `map(string)` | `{}` | no |
-| <a name="input_node_iam_role_use_name_prefix"></a> [node\_iam\_role\_use\_name\_prefix](#input\_node\_iam\_role\_use\_name\_prefix) | Determines whether the IAM role name (`iam_role_name`) is used as a prefix | `bool` | `true` | no |
+| <a name="input_node_iam_role_use_name_prefix"></a> [node\_iam\_role\_use\_name\_prefix](#input\_node\_iam\_role\_use\_name\_prefix) | Determines whether the Node IAM role name (`node_iam_role_name`) is used as a prefix | `bool` | `true` | no |
 | <a name="input_queue_kms_data_key_reuse_period_seconds"></a> [queue\_kms\_data\_key\_reuse\_period\_seconds](#input\_queue\_kms\_data\_key\_reuse\_period\_seconds) | The length of time, in seconds, for which Amazon SQS can reuse a data key to encrypt or decrypt messages before calling AWS KMS again | `number` | `null` | no |
 | <a name="input_queue_kms_master_key_id"></a> [queue\_kms\_master\_key\_id](#input\_queue\_kms\_master\_key\_id) | The ID of an AWS-managed customer master key (CMK) for Amazon SQS or a custom CMK | `string` | `null` | no |
 | <a name="input_queue_managed_sse_enabled"></a> [queue\_managed\_sse\_enabled](#input\_queue\_managed\_sse\_enabled) | Boolean to enable server-side encryption (SSE) of message content with SQS-owned encryption keys | `bool` | `true` | no |

modules/karpenter/variables.tf

@@ -236,7 +236,7 @@ variable "node_iam_role_name" {
 }
 
 variable "node_iam_role_use_name_prefix" {
-  description = "Determines whether the IAM role name (`iam_role_name`) is used as a prefix"
+  description = "Determines whether the Node IAM role name (`node_iam_role_name`) is used as a prefix"
   type        = bool
   default     = true
 }