chore: update license ref

Author: iduartgomez

rust/Cargo.toml

@@ -5,7 +5,7 @@ edition = "2021"
 rust-version = "1.71.1"
 publish = true
 description = "Freeenet standard library"
-license-file = "LGPL-3.0-only"
+license = "LGPL-3.0-only"
 repository = "https://github.com/freenet/freenet-stdlib"
 
 [dependencies]