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
"""
        Reads options, imports the full qualified name, and returns the object.
        In case of failure, it throws an exception a clear message with the key aad the section names
        :return: The object or None, if the option is empty
        """
        full_qualified_path = conf.get(section=section, key=key, **kwargs)
        if not full_qualified_path:
            return None
        try:
            return import_string(full_qualified_path)
        except ImportError as e:
            log.error(e)
            raise AirflowConfigException(
                f'The object could not be loaded. Please check "{key}" key in "{section}" section. '
                f'Current value: "{full_qualified_path}".'
            )
    def read(self, filenames, encoding=None):
        super().read(filenames=filenames, encoding=encoding)
    def read_dict(self, dictionary, source='<dict>'):
        super().read_dict(dictionary=dictionary, source=source)
    def has_option(self, section, option):
        try:
            
            
            
            self.get(section, option, fallback=_UNSET)
            return True
        except (NoOptionError, NoSectionError):
            return False
    def remove_option(self, section, option, remove_default=True):