Update bias_auc.py

fixed typo in overall

bias_auc.py

@@ -144,7 +144,7 @@ class BiasAUC(evaluate.Metric):
                                       if community != 'Overall generalized mean'])
             metric_values **=  power_value
             mean_value = np.power(np.sum(metric_values)/(len(result) - 1),  1/power_value)
-            result['Overall'][f"{metric}"] = mean_value
+            result['Overall generalized mean'][f"{metric}"] = mean_value
         y_preds = [output[1] for output in outputs]
         try:
             result['Overall generalized mean']["Overall AUC"] = roc_auc_score(labels, y_preds)