Update description for uploadComplete handler.

packages/ckeditor5-image/src/imageupload/imageuploadediting.ts

@@ -233,7 +233,7 @@ export default class ImageUploadEditing extends Plugin {
 		} );
 
 		// Set the default handler for feeding the image element with `src` and `srcset` attributes.
-		// Load the image, read and set `width` and `height` attributes (original sizes).
+		// Also set the natural `width` and `height` attributes (if not already set).
 		this.on<ImageUploadCompleteEvent>( 'uploadComplete', ( evt, { imageElement, data } ) => {
 			const urls = data.urls ? data.urls as Record<string, unknown> : data;