[Fix] Fix spelling mistakes on segmenter.py

paddlers/tasks/segmenter.py

@@ -524,7 +524,7 @@ class BaseSegmenter(BaseModel):
         for im in images:
             sample = {'image': im}
             if isinstance(sample['image'], str):
-                sample = ImgDecode(to_rgb=False)(sample)
+                sample = ImgDecoder(to_rgb=False)(sample)
             ori_shape = sample['image'].shape[:2]
             im = transforms(sample)[0]
             batch_im.append(im)