create.rb in mollie-api-ruby-4.0.1

- old
+ new

@@ -1,5 +1,5 @@
 refund = Mollie::Payment::Refund.create(
-  payment_id:  "tr_7UhSN1zuXS",
-  amount:      { value: "5.00", currency: "EUR" },
-  description: "Did not like it"
+  payment_id:  'tr_7UhSN1zuXS',
+  amount:      { value: '5.00', currency: 'EUR' },
+  description: 'Did not like it'
 )