Update menu.gui_script

Fixes #11

examples/_main/menu.gui_script

@@ -105,7 +105,7 @@ function init(self)
 	self.index["physics"] = { "dynamic", "kinematic", "raycast", "trigger" }
 	self.index["animation"] = { "spinner", "flipbook", "chained_tween", "basic_tween", "spine" }
 	self.index["gui"] = { "button", "stencil", "load_texture", "pointer_over", "color"}
-	self.index["input"] = { "move", "text", "down duration", "mouse_and_touch" }
+	self.index["input"] = { "move", "text", "down_duration", "mouse_and_touch" }
 	self.index["particles"] = { "particlefx", "modifiers" }
 	self.index["sound"] = { "music", "fade_in_out" }
 	self.index["render"] = { "camera" }