Git commits in Moodle 3.8.x by Chris Brown

commit 432e0ca9a64127c63a07a647f9821e21af09740e
Author: Chris Brown <chrisb@moodle.com>
Date:   Thu, 18 Mar 2021 17:31:56 +0800
Tag:    v3.8.9

MDL-71139 trademark: Improve the trademark messaging