Fix typo in README

Author: louisroyer

README.md

@@ -69,6 +69,6 @@ Louis Royer
 ### License
 The testbed code in this repository is under the MIT license, but the various software used, which are distributed in particular in the form of Docker images, are under other licenses.
 Notably:
-- [UERANSIM](https://github.com/aligungr/UERANSIM) is under the GPL-3.0 license
+- [UERANSIM](https://github.com/aligungr/UERANSIM) is under the AGPL-3.0 license
 - [Free5GC](https://github.com/free5gc) is under the Apache-2.0 license
 - Debian packaged softwares are under various free licenses available at `/usr/share/doc/*/copyright` into Docker images.