Change typings to types

examples/modules/hello-world/script/package.json

@@ -4,5 +4,5 @@
     "author": "napav",
     "description": "Example of a simple napa module.",
     "main": "./lib/hello-world.js",
-    "types": "./typings/hello-world.d.ts"
+    "types": "./types/hello-world.d.ts"
 }