fixed indent of yaml config file. (fixes #2889)
fixed indent of yaml config file. (fixes #2889)

kashiwasan/symfony-advanced,C-nakajima/OpenPNE3,ShinichiU/OpenPNE3,nishizoe/OpenPNE3,kashiwasan/symfony-advanced,C-nakajima/OpenPNE3,isaosano/OpenPNE3,upsilon/travis-test,nishizoe/OpenPNE3,isaosano/OpenPNE3,C-nakajima/OpenPNE3,ShinichiU/OpenPNE3,upsilon/travis-test,ShinichiU/OpenPNE3,C-nakajima/OpenPNE3,ShinichiU/OpenPNE3,isaosano/OpenPNE3,isaosano/OpenPNE3