Hello,

In Airflow 2, we've moved some configuration options to the new section. We also changed the names of some of the configuration options. This is confusing for users who are familiar with the old option and section names.  It would be great if we could add information to the documentation that points to the new name of the options.

https://github.com/apache/airflow/blob/8f48f12128e0d985c6de2603902524859fecbca8/airflow/configuration.py#L139-L169

> 'The {old} option in [{section}] has been renamed to {new}
> 'The {old_key} option in [{old_section}] has been moved to the {new_key} option in '
> '[{new_section}]

Best regards,
Kamil Breguła

airflow/configuration.py
"""Historical load_test_config"""
    warnings.warn(
        "Accessing configuration method 'load_test_config' directly from the configuration module is "
        "deprecated. Please access the configuration from the 'configuration.conf' object via "
        "'conf.load_test_config'",
        DeprecationWarning,
        stacklevel=2,
    )
    conf.load_test_config()
def get(*args, **kwargs):  
    """Historical get"""
    warnings.warn(
        "Accessing configuration method 'get' directly from the configuration module is "
        "deprecated. Please access the configuration from the 'configuration.conf' object via "
        "'conf.get'",
        DeprecationWarning,
        stacklevel=2,
    )
    return conf.get(*args, **kwargs)
def getboolean(*args, **kwargs):