ultralytics 8.0.81 single-line docstring updates (#2061)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

ultralytics/yolo/utils/dist.py

@@ -24,6 +24,7 @@ def find_free_network_port() -> int:
 
 
 def generate_ddp_file(trainer):
+    """Generates a DDP file and returns its file name."""
     module, name = f'{trainer.__class__.__module__}.{trainer.__class__.__name__}'.rsplit('.', 1)
 
     content = f'''cfg = {vars(trainer.args)} \nif __name__ == "__main__":
@@ -43,6 +44,7 @@ def generate_ddp_file(trainer):
 
 
 def generate_ddp_command(world_size, trainer):
+    """Generates and returns command for distributed training."""
     import __main__  # noqa local import to avoid https://github.com/Lightning-AI/lightning/issues/15218
     if not trainer.resume:
         shutil.rmtree(trainer.save_dir)  # remove the save_dir