fix lang strings, taked -> taken

lang/en/attendance.php

@@ -167,7 +167,7 @@ $string['olddate'] = 'Old date';
 $string['onlyselectedusers'] = 'Export specific users';
 $string['participant'] = 'Participant';
 $string['percentage'] = 'Percentage';
-$string['percentagesessionscompleted'] = 'Percentage over taked sessions';
+$string['percentagesessionscompleted'] = 'Percentage over taken sessions';
 $string['percentageallsessions'] = 'Percentage over all sessions';
 $string['pluginname'] = 'Attendance';
 $string['pluginadministration'] = 'Attendance administration';
@@ -225,7 +225,7 @@ $string['sessiondays'] = 'Session Days';
 $string['sessiondeleted'] = 'Session successfully deleted';
 $string['sessionexist'] = 'Session not added (already exists)!';
 $string['sessions'] = 'Sessions';
-$string['sessionscompleted'] = 'Taked sessions';
+$string['sessionscompleted'] = 'Taken sessions';
 $string['sessionstotal'] = 'Total number of sessions';
 $string['sessionsids'] = 'IDs of sessions: ';
 $string['sessiongenerated'] = 'One session was successfully generated';
@@ -308,7 +308,7 @@ $string['submitattendance'] = 'Submit attendance';
 $string['attendancenotset'] = 'You must set your attendance';
 $string['export'] = 'Export';
 $string['points'] = 'Points';
-$string['pointssessionscompleted'] = 'Points over taked sessions';
+$string['pointssessionscompleted'] = 'Points over taken sessions';
 $string['pointsallsessions'] = 'Points over all sessions';
 $string['unknowngroup'] = 'Unknown group';
 $string['notmember'] = 'not member';