Git commits in Moodle 3.10.3 by Ilya Tregubov

commit f81bc6488d6c13d2a0a48c158deac66c8d992db3
Author: Ilya Tregubov <ilya@moodle.com>
Date:   Wed, 03 Mar 2021 17:11:23 +0800
Tag:    v3.10.3

MDL-71026 user: Fix incorrect get_string call.