Update license path for acl in source.json

Author: henderkes

config/source.json

@@ -439,7 +439,7 @@
         "provide-pre-built": true,
         "license": {
             "type": "file",
-            "path": "doc/COPYING"
+            "path": "doc/COPYING.LGPL"
         }
     },
     "libaom": {