Fix pages on users

exam/classes/Models/User/User.php

@@ -339,7 +339,7 @@ class User implements JsonSerializable
       $data
     );
 
-    return ["pages" => intdiv($count, $limit + 1), "data" => $list];
+    return ["pages" => intdiv($count, $limit + 1) + 1, "data" => $list];
   }
 
   /**