Fix formatting issues in question_scorer and normalize_str functions

agent/score.py

@@ -37,7 +37,7 @@ def question_scorer(
             return True
         except ValueError:
             return False
-        
+
     if model_answer is None:
         model_answer = "None"
 
@@ -102,4 +102,4 @@ def normalize_str(input_str, remove_punct=True) -> str:
         translator = str.maketrans("", "", string.punctuation)
         return no_spaces.lower().translate(translator)
     else:
-        return no_spaces.lower()
+        return no_spaces.lower()