docs: fix license - GNU GPLv3 not MIT

Correct license information throughout the README:
- Badge: MIT → GPL v3
- License section: MIT → GNU GPLv3 or later

1 files changed, 2 insertions, 2 deletions

diff --git a/README.md b/README.md
index 305ea50..e9eb8fa 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 ![emacs-personal](https://archive.org/download/libreweb/emacs-personal-1.1.png?raw=true "emacs-personal")
 
-[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE)
+[![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](LICENSE)
 [![Emacs](https://img.shields.io/badge/Emacs-25+-7F5AB6.svg?logo=gnu-emacs&logoColor=white)](https://www.gnu.org/software/emacs/)
 
 ---
@@ -296,7 +296,7 @@ If fonts don't render correctly:
 
 ## License
 
-This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
+This project is licensed under the GNU General Public License v3.0 or later - see the [LICENSE](LICENSE) file for details.
 
 ---