
**Apache Airflow version**:
1.10.13

**What happened**:
`force_logout_after` should be `force_log_out_after` in the code section https://github.com/apache/airflow/blob/master/airflow/settings.py#L372-L381. As `force_log_out_after` is actually used and written in https://github.com/apache/airflow/blob/c5700a56bb3b9a5b872bda0fe0d3de82b0128bdf/UPDATING.md#unify-user-session-lifetime-configuration.

**What you expected to happen**:
`force_logout_after` is renamed to `force_log_out_after`.
airflow/settings.py
"""Configure ORM using SQLAlchemy"""
    log.debug("Setting up DB connection pool (PID %s)", os.getpid())
    global engine
    global Session
    engine_args = prepare_engine_args(disable_connection_pool)
    
    
    engine_args['encoding'] = conf.get('core', 'SQL_ENGINE_ENCODING', fallback='utf-8')
    if conf.has_option('core', 'sql_alchemy_connect_args'):
        connect_args = conf.getimport('core', 'sql_alchemy_connect_args')
    else:
        connect_args = {}
    engine = create_engine(SQL_ALCHEMY_CONN, connect_args=connect_args, **engine_args)
    setup_event_handlers(engine)
    Session = scoped_session(
        sessionmaker(
            autocommit=False,
            autoflush=False,
            bind=engine,
            expire_on_commit=False,
        )
    )
def prepare_engine_args(disable_connection_pool=False):