fixed minor bug (#709)

Signed-off-by: viraman <[email protected]>

Author: vinay-raman

tutorials/nemo-retriever-synthetic-data-generation/retriever_evalset_generator.py

@@ -128,7 +128,7 @@ def _process_on_partition(self, df: pd.DataFrame) -> pd.DataFrame:
         df["question"] = df["qa_pairs"].apply(lambda x: x["question"])
         df["question-id"] = df["question"].apply(self._get_random_hash)
         df["answer"] = df["qa_pairs"].apply(lambda x: x["answer"])
-        df["score"] = df["question"].apply(lambda: 1)
+        df["score"] = 1
 
         return df