Pontoon: Update Swedish (sv-SE) localization of Firefox Accounts

Co-authored-by: Peter Kihlstedt <peter.kihlstedt@gmail.com>

locale/sv_SE/auth.ftl

@@ -528,6 +528,10 @@ subscriptionSubsequentInvoiceDiscount-content-discount = Rabatt: -{ $invoiceDisc
 # Variables
 #  $invoiceDiscountAmount (String) - The amount of the discount of the subscription invoice, including currency, e.g. $2.00
 subscriptionSubsequentInvoiceDiscount-content-discount-one-time = Engångsrabatt: -{ $invoiceDiscountAmount }
+# Variables
+#  $invoiceDiscountAmount (String) - The amount of the discount of the subscription invoice, including currency, e.g. $2.00
+#  $discountDuration - The duration of the discount in number of months, e.g. 3 months
+subscriptionSubsequentInvoiceDiscount-content-discount-repeating = { $discountDuration } månaders rabatt: -{ $invoiceDiscountAmount }
 # Variables:
 # $productName (String) - The name of the subscribed product, e.g. Mozilla VPN
 subscriptionUpgrade-subject = Du har uppgraderat till { $productName }