Git commits in Moodle 3.7.x by kritisingh1

commit 36223fbee8feefd85003d64a60111cecd18100a0
Author: kritisingh1 <kritisingh1.ks@gmail.com>
Date:   Sun, 15 Mar 2020 01:49:53 +0800
Tag:    v3.7.6

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