Git commits in Moodle 3.9.4 by Helen Foster

commit 3b8bb4d4c1e347dd521dcb8f4bd334a7419b74d3
Author: Helen Foster <helen@moodle.org>
Date:   Fri, 08 Jan 2021 16:16:38 +0800
Tag:    v3.9.4

MDL-70550 lang: Import fixed English strings (en_fix)