fix Dashboard example result console.log

website/src/examples/dashboard/app.es6

@@ -69,8 +69,10 @@ function uppyInit () {
   uppy.run()
 
   uppy.on('complete', result => {
-    console.log('successful files:', result.successful)
-    console.log('failed files:', result.failed)
+    console.log('successful files:')
+    console.log(result.successful)
+    console.log('failed files:')
+    console.log(result.failed)
   })
 }