Update docs (#71)

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

docs/quickstart.md

@@ -37,6 +37,7 @@ Ultralytics YOLO comes with pythonic Model and Trainer interface.
     ```python
     import ultralytics
     from ultralytics import YOLO
+
     model = YOLO()
     model.new("s-seg.yaml") # automatically detects task type
     model.load("s-seg.pt") # load checkpoint