Language: adapt english text to use the term that existed in Chamilo …

…1 and that already have all the translations -refs BT#22274

public/main/admin/course_user_import.php

@@ -163,7 +163,7 @@ function parse_csv_data($file)
 $form->addElement('header', '', $tool_name);
 $form->addElement('file', 'import_file', get_lang('Import marks in an assessment'));
 $form->addElement('checkbox', 'subscribe', get_lang('Action'), get_lang('Add user in the course only if not yet in'));
-$form->addElement('checkbox', 'unsubscribe', '', get_lang('Remove user from course if his name is not in the list'));
+$form->addElement('checkbox', 'unsubscribe', '', get_lang('Remove users from any courses that are not mentioned explicitly in this file'));
 $form->addButtonImport(get_lang('Import'));
 $form->setDefaults(['subscribe' => '1', 'unsubscribe' => 1]);
 $errors = [];