Update JSON-guidelines.md

JSON-guidelines.md

@@ -89,7 +89,8 @@ List of validated sources for financial data:
 * https://www.find-and-update.company-information.service.gov.uk/ (UK);
 * https://www.romanian-companies.eu/ (RO-official);
 * https://www.kvk.nl/english/ordering-products-from-the-business-register/kvk-annual-financial-statements/ (NL-official);
-* https://www.brreg.no/ (NO-official).
+* https://www.brreg.no/ (NO-official);
+* https://foretagsinfo.bolagsverket.se/ (SE-official).
 
 Possible solution_category