update composer.json

composer.json

@@ -10,7 +10,7 @@
     "js"
   ],
   "homepage": "http://www.bootstrap-switch.org",
-  "license": "Apache License, Version 2.0",
+  "license": "Apache License Version 2.0",
   "authors": [
     {
       "name": "Mattia Larentis",