[pre-commit.ci] auto fixes from pre-commit.com hooks

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applications/ColossalChat/coati/trainer/dpo.py

@@ -382,7 +382,7 @@ class DPOTrainer(SLTrainer):
                         )
                     self.accumulative_meter.reset()
                 self.num_train_step += 1
-                
+
             if self.save_dir is not None and self.num_train_step > 0 and self.num_train_step % self.save_interval == 0:
                 # save checkpoint
                 self.coordinator.print_on_master("\nStart saving model checkpoint with running states")