### What do you see as an issue?

In the `EcsRunTaskOperator`, one of the params in the docstring is `region_name`, but it should be `region`:

https://github.com/apache/airflow/blob/2.5.0/airflow/providers/amazon/aws/operators/ecs.py#L281

### Solving the problem

_No response_

### Anything else

_No response_

### Are you willing to submit PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

"""
    Register a task definition on AWS ECS.
    .. seealso::
        For more information on how to use this operator, take a look at the guide:
        :ref:`howto/operator:EcsRegisterTaskDefinitionOperator`
    :param family: The family name of a task definition to create.
    :param container_definitions: A list of container definitions in JSON format that describe
        the different containers that make up your task.
    :param register_task_kwargs: Extra arguments for Register Task Definition.
    :param wait_for_completion: If True, waits for creation of the cluster to complete. (default: True)
    """
    template_fields: Sequence[str] = (
        "family",
        "container_definitions",
        "register_task_kwargs",
        "wait_for_completion",
    )
    def __init__(