fix template theme-child 2020

wp-content/themes/twentytwenty-child/style.css

 @charset "UTF-8";
 /*
 Theme Name: Twenty Twenty - noblogs patches
-Text Domain: twentytwentychild
-Description:  Twenty Twenty Child Theme - Urchin revision
-Requires PHP: 5.2.4
+ Template:	twentytwenty
+ Description:  Twenty Twenty Child Theme - Urchin revision
+ Requires PHP: 5.2.4
  Author:       Autistici Inventati
- Author URI:   http://noblogs.org
-License: GNU General Public License v2 or later
-License URI: http://www.gnu.org/licenses/gpl-2.0.html
-
-All files, unless otherwise stated, are released under the GNU General Public
-License version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html)
-
-This theme, like WordPress, is licensed under the GPL.
-Use it to make something cool, have fun, and share what you've learned
-with others.
+ Author URI:   https://noblogs.org
+ License:      GNU General Public License v3 or later
+ License URI:  http://www.gnu.org/licenses/gpl-3.0.html
+ Text Domain:  twentytwentychild
 */