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

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

monai/engines/workflow.py

@@ -127,7 +127,7 @@ def __init__(
             sampler = getattr(data_loader, "sampler", None)
 
             # set the epoch value for DistributedSampler objects when an epoch starts
-            if isinstance(sampler, DistributedSampler):  
+            if isinstance(sampler, DistributedSampler):
                 @self.on(Events.EPOCH_STARTED)
                 def set_sampler_epoch(engine: Engine) -> None:
                     sampler.set_epoch(engine.state.epoch)