Fixed correct ISO code

sl instead of si..

src/utils/languages.js

@@ -3,7 +3,7 @@ import en from '@/assets/locales/en.json';
 import de from '@/assets/locales/de.json';
 import nl from '@/assets/locales/nl.json';
 import fr from '@/assets/locales/fr.json';
-import si from '@/assets/locales/si.json';
+import sl from '@/assets/locales/sl.json';
 
 // Language data - Add your country name, locale code and imported file here
 export const languages = [
@@ -33,8 +33,8 @@ export const languages = [
   },
   {
     name: 'Slovenian',
-    code: 'si',
-    locale: si,
+    code: 'sl',
+    locale: sl,
     flag: '🇸🇮',
   },
   // Including: