Minor typo fix

app/views/routes/index.html.haml

@@ -10,7 +10,7 @@
     .noData.noData--clean
       %h2.noData__title No routes have been configured for this server.
       %p.noData__text
-        To receive incoming mail, you need to add routes so where we should send
+        To receive incoming mail, you need to add routes to where we should send
         messages we receive for your domain. You can send incoming e-mail to
         HTTP endpoints, other SMTP servers or e-mail addresses.