refactor: update comments

Author: mrholek

src/pug/_partials/banner.pug

@@ -1,7 +1,7 @@
 //
    * CoreUI - Free Bootstrap Admin Template
    * @version v4.2.2
-   * @link https://coreui.io
-   * Copyright (c) 2022 creativeLabs Łukasz Holeczek
-   * Licensed under MIT (https://coreui.io/license)
-= "\n"
+   * @link https://coreui.io/product/free-bootstrap-admin-template/
+   * Copyright (c) 2023 creativeLabs Łukasz Holeczek
+   * Licensed under MIT (https://github.com/coreui/coreui-free-bootstrap-admin-template/blob/main/LICENSE)
+= "\n"