fix composer license

balping · balping · commit a1e2a89da1b0 · 2018-01-31T17:26:49.000Z
diff --git a/composer.json b/composer.json
@@ -12,7 +12,7 @@
         "orchestra/testbench": "3.5.x",
         "phpunit/phpunit": "^6.3"
     },
-    "license": "GPL-3.0",
+    "license": "GPL-3.0-only",
     "authors": [
         {
             "name": "Balázs Dura-Kovács"
