Fix float zeros format (#5491)

* Fix float zeros format

* 255 to integer

export.py

@@ -117,7 +117,7 @@ def export_coreml(model, im, file, prefix=colorstr('CoreML:')):
 
         model.train()  # CoreML exports should be placed in model.train() mode
         ts = torch.jit.trace(model, im, strict=False)  # TorchScript model
-        ct_model = ct.convert(ts, inputs=[ct.ImageType('image', shape=im.shape, scale=1 / 255.0, bias=[0, 0, 0])])
+        ct_model = ct.convert(ts, inputs=[ct.ImageType('image', shape=im.shape, scale=1 / 255, bias=[0, 0, 0])])
         ct_model.save(f)
 
         LOGGER.info(f'{prefix} export success, saved as {f} ({file_size(f):.1f} MB)')