fix readme example in purchase

Author: jonasborges-stark

README.md

@@ -2388,21 +2388,21 @@ merchant_session_purchase = starkbank.merchantsession.purchase(
   card_expiration="2035-01",
   card_number="5448280000000007",
   card_security_code="123",
-  holder_name="Holder Name",
-  holder_email="holdeName@email.com",
-  holder_phone="11111111111",
+  holder_name="Margaery Tyrell",
+  holder_email="margaery.tyrell@email.com",
+  holder_phone="11998663456",
   funding_type="credit",
   billing_country_code="BRA",
   billing_city="São Paulo",
   billing_state_code="SP",
-  billing_street_line1="Rua do Holder Name, 123",
-  billing_street_line2="",
+  billing_street_line1="Rua do Jardim de cima, 123",
+  billing_street_line2="1 andar",
   billing_zip_code="11111-111",
   metadata={
     "extraData": "extraData",
     "language": "pt-BR",
     "timezoneOffset": 3,
-    "userAgent": "Postman",
+    "userAgent": "Mozilla",
     "userIp": "255.255.255.255"
   }
 )