[docstring] SwinModel docstring fix (#26679)

* remove from utils

* updated doc string

* only in the model

* Update src/transformers/models/swin/modeling_swin.py

Co-authored-by: Yih-Dar <2521628+ydshieh@users.noreply.github.com>

* Update src/transformers/models/swin/modeling_swin.py

Co-authored-by: Yih-Dar <2521628+ydshieh@users.noreply.github.com>

---------

Co-authored-by: Yih-Dar <2521628+ydshieh@users.noreply.github.com>

utils/check_docstrings.py

@@ -499,7 +499,6 @@ OBJECTS_TO_IGNORE = [
     "SqueezeBertTokenizerFast",
     "SummarizationPipeline",
     "Swin2SRImageProcessor",
-    "SwinModel",
     "Swinv2Model",
     "SwitchTransformersConfig",
     "T5Config",