minor fix

verl/trainer/config/ppo_trainer.yaml

@@ -578,7 +578,7 @@ critic:
 
   # checkpoint configs
   checkpoint:
-  
+
     # What to include in saved checkpoints
     # with 'hf_model' you can save whole model as hf format, now only use sharded model checkpoint to save space
     save_contents: ['model', 'optimizer', 'extra']

verl/utils/checkpoint/fsdp_checkpoint_manager.py

@@ -45,9 +45,9 @@ class FSDPCheckpointManager(BaseCheckpointManager):
         processing_class (PreTrainedTokenizer or ProcessorMixin, optional):
             Pre-/post-processing artifact handler.
         checkpoint_load_contents (list[str], optional):
-            Components to load; must contain 'model', 'optimizer', 'extra'.
+            Components to load; must contain 'model'. Defaults to ['model', 'optimizer', 'extra'].
         checkpoint_save_contents (list[str], optional):
-            Components to save; must contain 'model', 'optimizer', 'extra'.
+            Components to save; must contain 'model'. Defaults to ['model', 'optimizer', 'extra'].
     """
 
     def __init__(
@@ -89,7 +89,7 @@ def load_checkpoint(self, local_path: str, hdfs_path: str = None, del_local_afte
         """
         if local_path is None:
             return
-        
+
         # check if the checkpoint_load_contents is valid
         if self.should_load_model:
             assert self.model is not None, "model must be provided when checkpoint_contents.load includes ['model']"