Fix off by one in Viewport.render_target_update_mode property enum

scene/main/viewport.cpp

@@ -3860,7 +3860,7 @@ void SubViewport::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "size_2d_override_stretch"), "set_size_2d_override_stretch", "is_size_2d_override_stretch_enabled");
 	ADD_GROUP("Render Target", "render_target_");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "render_target_clear_mode", PROPERTY_HINT_ENUM, "Always,Never,Next Frame"), "set_clear_mode", "get_clear_mode");
-	ADD_PROPERTY(PropertyInfo(Variant::INT, "render_target_update_mode", PROPERTY_HINT_ENUM, "Disabled,Once,When Visible,Always"), "set_update_mode", "get_update_mode");
+	ADD_PROPERTY(PropertyInfo(Variant::INT, "render_target_update_mode", PROPERTY_HINT_ENUM, "Disabled,Once,When Visible,When Parent Visible,Always"), "set_update_mode", "get_update_mode");
 
 	BIND_ENUM_CONSTANT(CLEAR_MODE_ALWAYS);
 	BIND_ENUM_CONSTANT(CLEAR_MODE_NEVER);