def modify_extra_section(yaml_content):
    """Modifies extra's section of the yaml_content.

    Args:
        yaml_content (str): Text representing yaml content

    Returns:
        [str]: yaml_content with extra's section modified
    """
    yaml_content["extra"]["recipe-maintainers"] = ["prabhakk-mw", "diningPhilosopher64"]
    return yaml_content