Fix a typo and correct the directory path when auto downloading dataset (#20)

* 🐛 [Fix] path error when preparing dataset

* ✏️ [Update] import typos in dataset_preparation.py

Author: SamWang0807

yolo/tools/dataset_preparation.py

@@ -61,7 +61,7 @@ def prepare_dataset(cfg):
             extract_to = os.path.join(data_dir, data_type) if data_type != "annotations" else data_dir
             final_place = os.path.join(extract_to, dataset_type)
 
-            os.makedirs(extract_to, exist_ok=True)
+            os.makedirs(final_place, exist_ok=True)
             if check_files(final_place, dataset_args.get("file_num")):
                 logger.info(f"✅ Dataset {dataset_type: <12} already verified.")
                 continue
@@ -78,7 +78,7 @@ def prepare_dataset(cfg):
     import sys
 
     sys.path.append("./")
-    from tools.log_helper import custom_logger
+    from utils.logging_utils import custom_logger
 
     custom_logger()
     prepare_dataset()