fix bug in split

run_speech_recognition_ctc.py

@@ -540,6 +540,7 @@ def main():
             )
         except ValueError:
             split_dataset = raw_datasets["train"].train_test_split(test_size=0.1, seed=42)
+            raw_datasets["train"] = split_dataset["train"]
             raw_datasets["eval"] = split_dataset["test"]
             print(raw_datasets["eval"])
             print("Sampled from training set")