MDL-31803 lang - make the mooch registration message more descriptive

lang/en/admin.php

@@ -851,7 +851,7 @@
 $string['registermoodleorg'] = 'When you register your site with {$a}';
 $string['registermoodleorgli1'] = 'You are added to a low-volume mailing list for important notifications such as security alerts and new releases of Moodle.';
 $string['registermoodleorgli2'] = 'Statistics about your site will be added to the {$a} of the worldwide Moodle community.';
-$string['registermoodleorgli3'] = 'Your site is also registered with the Moodle.org Open Community Hub ({$a}).';
+$string['registermoodleorgli3'] = 'Your site is also registered with the Moodle.org Open Community Hub ({$a}), allowing users with the publish courses capability (by default only managers) the option of publishing courses to MOOCH.';
 $string['registerwithmoodleorg'] = 'Register with Moodle.org';
 $string['registration'] = 'Registration';
 $string['registration_help'] = 'It is recommended to register on Moodle.org to receive security email alerts, to contribute to the Moodle growth and statistics, or to be able to share courses on MOOCH.';