Git commits in Moodle 3.7.6 by Ruslan Kabalin

commit b71d42cfb4a3b8f5c2ecd83d3c719a140125370a
Author: Ruslan Kabalin <ruslan.kabalin@gmail.com>
Date:   Thu, 02 Apr 2020 21:11:37 +0800
Tag:    v3.7.6

MDL-68315 formslib: Fix completion attribute in course form element.