Typo in examples

 There is a typo in the example on https://vleue.github.io/vleue_navigator/ specifically in the function definition, `navmeshes: Res>` I assume it should be `navmeshes: Res<Assets<Navmesh>>` or something like that. Also the plugin is added via `NavmeshUpdaterPlugin::::default(),` which looks like two colons too much 🤔