create.rb in mollie-api-ruby-4.0.1

- old
+ new

@@ -1,8 +1,8 @@
 subscription = Mollie::Customer::Subscription.create(
-  customer_id: "cst_5a2pPrwaWy",
-  amount:      { value: "20.00", currency: "EUR" },
+  customer_id: 'cst_5a2pPrwaWy',
+  amount:      { value: '20.00', currency: 'EUR' },
   times:       4,
-  interval:    "3 months",
-  description: "Quarterly payment",
-  webhook_url: "https://webshop.example.org/payments/webhook/"
+  interval:    '3 months',
+  description: 'Quarterly payment',
+  webhook_url: 'https://webshop.example.org/payments/webhook/'
 )