Translate with Mexican Spanish instead of basic Spanish

Author: Aaron-Detre

src/main/java/org/wise/portal/presentation/web/controllers/author/project/TranslateProjectAPIController.java

@@ -91,7 +91,7 @@ private TranslateTextRequest buildTranslateTextRequest(String srcText, String sr
   private String convertLanguageToAWSCode(String language) throws IllegalArgumentException {
     return switch (language) {
       case "English" -> "en";
-      case "Spanish" -> "es";
+      case "Spanish" -> "es-MX";
       case "Italian" -> "it";
       case "Japanese" -> "ja";
       case "German" -> "de";