Fix examples

Author: gen2brain

examples/games/arkanoid/main.go

@@ -81,7 +81,7 @@ func main() {
 
 // For android
 func init() {
-	rl.SetCallbackFunc(main)
+	rl.SetMain(main)
 }
 
 // NewGame - Create a new game instance

examples/games/floppy/main.go

@@ -95,7 +95,7 @@ func NewGame() (g Game) {
 
 // On Android this sets callback function to be used for android_main
 func init() {
-	rl.SetCallbackFunc(main)
+	rl.SetMain(main)
 }
 
 func main() {

examples/others/android/example/main.go

@@ -16,7 +16,7 @@ const (
 )
 
 func init() {
-	rl.SetCallbackFunc(main)
+	rl.SetMain(main)
 }
 
 func main() {