gpl-2.0.txt in licensee-4.6.0

- old
+ new

@@ -1,6 +1,7 @@
 ---
 title: GNU General Public License v2.0
+nickname: GNU GPL v2.0
 category: GPL
 tab-slug: gpl-v2
 hide-from-license-list: false
 layout: license
 permalink: /licenses/gpl-2.0/