MDL-70935 mod_quiz: Missing completionminattempts rule description

The mod_quiz_get_completion_active_rule_descriptions() function was not
returning the description for the 'completionminattempts' rule. Added
that.

mod/quiz/lang/en/quiz.php

@@ -180,6 +180,7 @@ $string['commentorgrade'] = 'Make comment or override grade';
 $string['comments'] = 'Comments';
 $string['completedon'] = 'Completed on';
 $string['completionminattempts'] = 'Minimum number of attempts:';
+$string['completionminattemptsdesc'] = 'Minimum number of attempts required: {$a}';
 $string['completionminattemptsgroup'] = 'Require attempts';
 $string['completionminattemptserror'] = 'Minimum number of attempts must be lower or equal to attempts allowed.';
 $string['completionpass'] = 'Require passing grade';

mod/quiz/lib.php

@@ -2222,6 +2222,11 @@ function mod_quiz_get_completion_active_rule_descriptions($cm) {
                     $descriptions[] = get_string('completionpassdesc', 'quiz', format_time($val));
                 }
                 break;
+            case 'completionminattempts':
+                if (!empty($val)) {
+                    $descriptions[] = get_string('completionminattemptsdesc', 'quiz', $val);
+                }
+                break;
             default:
                 break;
         }