Parameter statement of upload-progress event is incorrect

[nerg4l]

Hi,

I recently run in to an issue after subscribing to the upload-progress event. I did not understand why percentage is undefined while it should be the same.

The documentation of upload-progress states that the progress parameter is "The same object as in file.progress".

But that's not true. The progress value only contains a fraction of that object. The code example shows the correct structure.

uppy.io/docs/uppy-core.mdx

Lines 1061 to 1078 in 96f5c5c

	#### `upload-progress`
	Fired each time an individual file upload progress is available:
	**Parameters**
	- `file` - The [Uppy file](#working-with-uppy-files) that has progressed.
	- `progress` - The same object as in `file.progress`.
	**Example**
	```js
	uppy.on('upload-progress', (file, progress) => {
	// file: { id, name, type, ... }
	// progress: { uploader, bytesUploaded, bytesTotal }
	console.log(file.id, progress.bytesUploaded, progress.bytesTotal);
	});
	```