Git commits in Moodle 3.5.3 by Davo Smith

commit 73c8d34ab817358ea89c44efb36f564dda41766b
Author: Davo Smith <davo.smith@synergy-learning.com>
Date:   Mon, 22 Oct 2018 18:24:17 +0800
Tag:    v3.5.3

MDL-63727 mod_scorm: fix typo in sco_launched URL