fix(l10n): translated using Weblate (Slovak)

Currently translated at 100.0% (121 of 121 strings)

Translation: ubuntu-desktop-translations/Ubuntu Flutter Plugins
Translate-URL: https://hosted.weblate.org/projects/ubuntu-desktop-translations/ubuntu-flutter-plugins/sk/

Author: Peter Vančo

packages/ubuntu_localizations/lib/src/l10n/ubuntu_sk.arb

@@ -138,7 +138,7 @@
   "@noneLabel": {},
   "normalLabel": "Normálna",
   "@normalLabel": {},
-  "okLabel": "Ok",
+  "okLabel": "OK",
   "@okLabel": {},
   "openLabel": "Otvoriť",
   "@openLabel": {},