Fix typo in Scene.hx (#791)

Fix little typo in Scene.hx

h2d/Scene.hx

@@ -209,7 +209,7 @@ class Scene extends Layers implements h3d.IDrawable implements hxd.SceneEvents.I
 	/**
 		Set the fixed size for the scene, will prevent automatic scene resizing when screen size changes.
 	**/
-	@:deprecated("setFixedSize is deprecated, use scaleMode = Strech(w, h) instead")
+	@:deprecated("setFixedSize is deprecated, use scaleMode = Stretch(w, h) instead")
 	public function setFixedSize( w : Int, h : Int ) {
 		scaleMode = Stretch(w, h);
 	}