Git commits in Moodle 3.11.3 by Nhan Vo

commit 1b99453e1f4952ae5622639711137f892c53ca1a
Author: Nhan Vo <tinhnhanvh@gmail.com>
Date:   Tue, 07 Jul 2020 18:08:35 +0800
Tag:    v3.11.3

MDL-68639 HTML Editor (Atto): Invalid HTML for nested lists