Git commits in Moodle 3.8.x by kritisingh1

commit eed0cbe1766f38ca29eeeaede73487f504ff1a66
Author: kritisingh1 <kritisingh1.ks@gmail.com>
Date:   Sun, 15 Mar 2020 01:54:30 +0800
Tag:    v3.8.3

MDL-68081 Groups: Fixes string error in member removal function