Git commits in Moodle 3.8.4 by David Mudrák

commit e67a6060e098572b6bc18cae07ee04913a30bfa3
Author: David Mudrák <david@moodle.com>
Date:   Wed, 20 May 2020 05:01:16 +0800
Tag:    v3.8.4

MDL-68738 wiki: Prevent URLs inside links from turning into another link