Update translations (#6682)

* Update translations

* Update app_menu.php

* Update app_languages.php

app/registrations/app_menu.php

@@ -22,7 +22,7 @@
 	$apps[$x]['menu'][$y]['title']['sv-se'] = "Registreringar";
 	$apps[$x]['menu'][$y]['title']['uk-ua'] = "Реєстрації";
 	$apps[$x]['menu'][$y]['title']['zh-cn'] = "登记";
-	$apps[$x]['menu'][$y]['title']['ja-jp'] = "参加登録";
+	$apps[$x]['menu'][$y]['title']['ja-jp'] = "登録";
 	$apps[$x]['menu'][$y]['title']['ko-kr'] = "등록";
 	$apps[$x]['menu'][$y]['uuid'] = "17dbfd56-291d-8c1c-bc43-713283a9dd5a";
 	$apps[$x]['menu'][$y]['parent_uuid'] = "0438b504-8613-7887-c420-c837ffb20cb1";