Update readme.txt

Author: mtoensing

readme.txt

@@ -2,12 +2,12 @@
 Contributors: MarcDK
 Tags: TOC, Table of Contents, Block, Accessibility, Table
 Requires at least: 5.9
-Donate link: https://marc.tv/out/donate
 Tested up to: 6.8
 Stable tag: 6.7.3
 Requires PHP: 7.0
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
+Donate link: https://marc.tv/out/donate
 
 SEO-friendly Table of Contents Gutenberg block. No JavaScript and no CSS means faster loading.