Fixed naming

I18N Commander/Processor/AppSettings.cs

@@ -220,7 +220,7 @@ public static class AppSettings
     private static int CACHE_DEEPL_SOURCE_CULTURE = -1;
     private static bool CACHE_DEEPL_SOURCE_CULTURE_IS_LOADED = false;
     
-    public static async Task SetDeepLSourceCulture(int cultureIndex)
+    public static async Task SetDeepLSourceCultureIndex(int cultureIndex)
     {
         // Update the cache:
         CACHE_DEEPL_SOURCE_CULTURE = cultureIndex;