fix --show-settings output for config file
fix --show-settings output for config file

guardian/alerta,skob/alerta,mrkeng/alerta,guardian/alerta,0312birdzhang/alerta,skob/alerta,guardian/alerta,skob/alerta,skob/alerta,0312birdzhang/alerta,mrkeng/alerta,mrkeng/alerta,guardian/alerta,0312birdzhang/alerta,mrkeng/alerta