fix type in ComposeMethod doc
@@ -13,7 +13,7 @@ type ComposeTarget interface {
// ComposeMethod is a Porter-Duff composition method.
type ComposeMethod int
-// Here's the list of all available Porter-Duff composition methods. User ComposeOver for the basic
+// Here's the list of all available Porter-Duff composition methods. Use ComposeOver for the basic
// alpha blending.
const (
ComposeOver ComposeMethod = iota
