Update Vagrantfile.example to forward port 8080 (#9732)

There was a change in how the code is run locally and part
of this change included using port 8080. This change includes
the port forwarding for said port in the example file for Vagrant

Vagrantfile.example

@@ -16,5 +16,7 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   config.vm.hostname = "habitrpg"
   config.vm.network "forwarded_port", guest: 3000, host: 3000, auto_correct: true
   config.vm.usable_port_range = (3000..3050)
+  config.vm.network "forwarded_port", guest: 8080, host: 8080, auto_correct: true
+  config.vm.usable_port_range = (8080..8130)
   config.vm.provision :shell, :path => "vagrant_scripts/vagrant.sh"
 end