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

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Author: pre-commit-ci[bot]

src/pytorch_lightning/core/module.py

@@ -1586,7 +1586,7 @@ def lr_scheduler_step(self, scheduler, optimizer_idx, metric):
 
         """
         optimizer = self.trainer.optimizers[optimizer_idx]
-        if hasattr(optimizer, '_step_count') and optimizer._step_count <= 0:
+        if hasattr(optimizer, "_step_count") and optimizer._step_count <= 0:
             return
 
         if metric is None: