config-sample.json: improved to have more useful sample values

Author: rdworth

config-sample.json

@@ -1,5 +1,5 @@
 {
-        "url": "wordpress.dev",
+        "url": "dev.api.jqueryui.com",
         "username": "admin",
-        "password": "admin"
+        "password": "secret"
 }