fix whitespace

_examples/image.go

@@ -49,7 +49,7 @@ func main() {
 	defer ui.Close()
 
 	img := widgets.NewImage(nil)
- 	img.SetRect(0, 0, 100, 50)
+	img.SetRect(0, 0, 100, 50)
 	index := 0
 	render := func() {
 		img.Image = images[index]

widgets/image.go

@@ -63,9 +63,9 @@ type Image struct {
 
 func NewImage(img image.Image) *Image {
 	return &Image{
-		Block:               *NewBlock(),
-		MonochromeThreshold: 128,
-		Image:               img,
+		Block:                 *NewBlock(),
+		MonochromeThreshold:   128,
+		Image:                 img,
 		visibleSubImagePixels: image.Rectangle{},
 	}
 }