Update wine.py

wine.py

@@ -94,8 +94,8 @@ class Wine(datasets.GeneratorBasedBuilder):
 
     def preprocess(self, data: pandas.DataFrame, config: str = DEFAULT_CONFIG) -> pandas.DataFrame:
         data = data.rename(columns={"color": "is_red"})       
-        data.loc[data.is_red == "red", "color"] = 0
-        data.loc[data.is_red == "white", "color"] = 1
+        data.loc[data.is_red == "red", "is_red"] = 0
+        data.loc[data.is_red == "white", "is_red"] = 1
         
         return data