Update frontend documentation about path

software/apache-frontend/README.apache_frontend.txt

@@ -92,11 +92,22 @@ Domain name to use as frontend. The frontend will be accessible from this domain
 Example: www.mycustomdomain.com
 
 
+path
+~~~~
+Only used if type is "zope".
+
+Will append the specified path to the "VirtualHostRoot" of the zope's
+VirtualHostMonster.
+
+"path" is an optional parameter, ignored if not specified.
+Example of value: "/erp5/web_site_module/hosting/"
+
+
 Advanced example
 ================
 
 Request slave frontend instance using a Zope backend, with Varnish activated,
-listening to a custom domain::
+listening to a custom domain and redirecting to /erp5/::
   instance = request(
     software_release=apache_frontend,
     partition_reference='frontend2',
@@ -105,6 +116,7 @@ listening to a custom domain::
         "url":"https://[1:2:3:4]:1234/someresource",
         "cache":"true",
         "type":"zope",
+        "path":"/erp5",
         "custom_domain":"mycustomdomain.com",
     }
   )