Add feature flagging comment and update docstrings

Author: ghukill

abdiff/core/collate_ab_transforms.py

@@ -34,7 +34,7 @@
 
 
 def collate_ab_transforms(run_directory: str, ab_transformed_datasets: list[str]) -> str:
-    """Collates A/B transformed files into a Parquet dataset."""
+    """Collates A/B transformed records into a Parquet dataset."""
     joined_dataset_path = tempfile.TemporaryDirectory()
     collated_dataset_path = str(Path(run_directory) / "collated")
 

abdiff/core/run_ab_transforms.py

@@ -155,6 +155,7 @@ def run_docker_container(
         run_id = str(uuid.uuid4())
 
     environment_variables = {
+        # NOTE: FEATURE FLAG: ETL_VERSION not required once v2 is fully implemented
         "ETL_VERSION": "2",
     }