quiz results block: MDL-17137 block_quiz_results: manager links to gr…

…oup/overview are wrong.

Eloy told me exactly what to change. I don't know why he did not commit the fix himself!

blocks/quiz_results/block_quiz_results.php

@@ -178,7 +178,7 @@ function get_content() {
 
             if ($nameformat = B_QUIZRESULTS_NAME_FORMAT_FULL) {
                 if (has_capability('moodle/course:managegroups', $context)) {
-                    $grouplink = $CFG->wwwroot.'/group/overview.php?courseid='.$courseid.'&id=';
+                    $grouplink = $CFG->wwwroot.'/group/overview.php?id='.$courseid.'&group=';
                 } else if (has_capability('moodle/course:viewparticipants', $context)) {
                     $grouplink = $CFG->wwwroot.'/user/index.php?id='.$courseid.'&group=';
                 } else {