fix issue#437 (#307)

Author: Nogromi

core/Energy/UDEC.yml

@@ -1,10 +1,10 @@
 ---
 title: Ukraine Energy Centre Datasets
-homepage: https://ukrstat.org/en/operativ/menu/menu_e/energ.htm
+homepage: https://ukrstat.gov.ua/operativ/menu/menu_e/energ.htm
 category: Energy
 description: 
 version:
-keywords:
+keywords: electricity, fuel, natural gas, consumption, supply, energy
 image:
 temporal:
 spatial:
@@ -19,4 +19,4 @@ license:
 publisher: 
 organization:
 issued_time:
-sources: [https://en-press.ens.dk/pressreleases/the-ukraine-denmark-energy-center-launches-advanced-database-with-open-and-transparent-energy-data-2962113]
+sources: