Update __init__.py(get_user_config_dir)

"ultralytics/runs/" -> "yolov12/runs/"

ultralytics/utils/__init__.py

@@ -774,7 +774,7 @@ def get_ubuntu_version():
             return None
 
 
-def get_user_config_dir(sub_dir="Ultralytics"):
+def get_user_config_dir(sub_dir="yolov12"):
     """
     Return the appropriate config directory based on the environment operating system.