use .test instead of .dev as development domain

Since .dev is an official Top Level Domain it should not be used for local development.
Also, Chrome forces https on these domains.

Author: Henry Snoek

setup/homestead.rst

@@ -48,19 +48,19 @@ configuration:
 
     # ...
     sites:
-        - map: symfony-demo.dev
+        - map: symfony-demo.test
           to: /home/vagrant/projects/symfony_demo/web
           type: symfony
 
 The ``type`` option tells Homestead to use the Symfony nginx configuration.
 
-At last, edit the hosts file on your local machine to map ``symfony-demo.dev``
+At last, edit the hosts file on your local machine to map ``symfony-demo.test``
 to ``192.168.10.10`` (which is the IP used by Homestead)::
 
     # /etc/hosts (unix) or C:\Windows\System32\drivers\etc\hosts (Windows)
-    192.168.10.10 symfony-demo.dev
+    192.168.10.10 symfony-demo.test
 
-Now, navigate to ``http://symfony-demo.dev`` in your web browser and enjoy
+Now, navigate to ``http://symfony-demo.test`` in your web browser and enjoy
 developing your Symfony application!
 
 .. seealso::