Rename cn to zh for language

resources/lang/zh/passwords.php

@@ -0,0 +1,19 @@
+<?php
+
+return [
+    /*
+    |--------------------------------------------------------------------------
+    | Password Reset Language Lines
+    |--------------------------------------------------------------------------
+    |
+    | The following language lines are the default lines which match reasons
+    | that are given by the password broker for a password update attempt
+    | has failed, such as for an invalid token or invalid new password.
+    |
+    */
+    'password' => '密码至少六位数，并且两次输入的密码一致.',
+    'reset' => '您的密码已重设!',
+    'sent' => '我们已发送密码重设电子邮件!',
+    'token' => '此密码重设连接的令牌已过期.',
+    'user' => '无法找到此Email的用户.',
+];