chore: add docs and fix variable def

Author: Mathew-Estafanous

modules/ecs_fargate/README.md

@@ -245,6 +245,7 @@ No modules.
 | <a name="input_dd_cluster_name"></a> [dd\_cluster\_name](#input\_dd\_cluster\_name) | Datadog cluster name | `string` | `null` | no |
 | <a name="input_dd_cpu"></a> [dd\_cpu](#input\_dd\_cpu) | Datadog Agent container CPU units | `number` | `null` | no |
 | <a name="input_dd_cws"></a> [dd\_cws](#input\_dd\_cws) | Configuration for Datadog Cloud Workload Security (CWS) | <pre>object({<br/>    enabled          = optional(bool, false)<br/>    cpu              = optional(number)<br/>    memory_limit_mib = optional(number)<br/>  })</pre> | <pre>{<br/>  "enabled": false<br/>}</pre> | no |
+| <a name="input_dd_docker_labels"></a> [dd\_docker\_labels](#input\_dd\_docker\_labels) | Datadog Agent container docker labels | `map(string)` | `{}` | no |
 | <a name="input_dd_dogstatsd"></a> [dd\_dogstatsd](#input\_dd\_dogstatsd) | Configuration for Datadog DogStatsD | <pre>object({<br/>    enabled                  = optional(bool, true)<br/>    origin_detection_enabled = optional(bool, true)<br/>    dogstatsd_cardinality    = optional(string, "orchestrator")<br/>    socket_enabled           = optional(bool, true)<br/>  })</pre> | <pre>{<br/>  "dogstatsd_cardinality": "orchestrator",<br/>  "enabled": true,<br/>  "origin_detection_enabled": true,<br/>  "socket_enabled": true<br/>}</pre> | no |
 | <a name="input_dd_env"></a> [dd\_env](#input\_dd\_env) | The task environment name. Used for tagging (UST) | `string` | `null` | no |
 | <a name="input_dd_environment"></a> [dd\_environment](#input\_dd\_environment) | Datadog Agent container environment variables. Highest precedence and overwrites other environment variables defined by the module. For example, `dd_environment = [ { name = 'DD_VAR', value = 'DD_VAL' } ]` | `list(map(string))` | <pre>[<br/>  {}<br/>]</pre> | no |

modules/ecs_fargate/variables.tf

@@ -98,7 +98,7 @@ variable "dd_environment" {
 
 variable "dd_docker_labels" {
   description = "Datadog Agent container docker labels"
-  type        = map(map(string))
+  type        = map(string)
   default     = {}
 }