Fix wrong error/no error in GEC

quiz.py

@@ -87,7 +87,7 @@ def icelandic_sentence_gec_preprocessing(sample):
         f"Inniheldur eftirfarandi málsgrein villu?<p style='margin-left: 25px;'><i>{sample['sentence']}</i></p>"
     )
     new_sample["options"] = "Villa", "Engin villa"
-    new_sample["answer"] = "Engin villa" if sample["correct"] == "false" else "Villa"
+    new_sample["answer"] = "Villa" if sample["correct"] == "false" else "Engin villa"
     new_sample["instruction"] = "Valkostir"
     return new_sample