Fix domains config

Author: jmsche

setup/symfony_server.rst

@@ -297,9 +297,10 @@ There are several options that you can set using a ``.symfony.local.yaml`` confi
 .. code-block:: yaml
 
     # Sets domain1.wip and domain2.wip for the current project
-    domains:
-        - domain1
-        - domain2
+    proxy:
+        domains:
+            - domain1
+            - domain2
 
     http:
         document_root: public/ # Path to the project document root