更新klarna

countrycode.md

@@ -31,4 +31,5 @@ konbini|Konbini only works for country code "JP" and currency "JPY".
 payeasy|Pay-easy only works for country code "JP" and currency "JPY".
 doku|DOKU Wallet only works for the countrycode "ID" and currency "IDR".
 ovo|OVO only works for the countrycode "ID" and currency "IDR".
-grabpayotp|Grabpay only works for the countrycode "SG" and currency "SGD".
+grabpayotp|Grabpay only works for the countrycode "SG" and currency "SGD".
+klarna|Klarna works for country codes "AT", "DE", "DK", "FI", "GB", "NL", "NO", "SE" and currencies "EUR", "GBP", "NOK", "SEK", "DKK".