fixed typo

Author: Pedro Fonseca Esteves

ratsql/commands/train.py

@@ -139,7 +139,7 @@ def train(self, config, modeldir):
         last_step = saver.restore(modeldir, map_location=self.device)
 
         #lr fix to not break scheduler when loading from checkpoint
-        lr_scheduler.param_groups = optimizer.param_group
+        lr_scheduler.param_groups = optimizer.param_groups
 
         if "pretrain" in config and last_step == 0:
             pretrain_config = config["pretrain"]