Fix syntax error in Hanami routes

This was introduced by accident in 7ea2f0b.

Author: timriley

ruby/hanami/config/routes.rb

@@ -6,6 +6,6 @@ class Routes < Hanami::Routes
 
     get "/user/:id", to: "user.get"
 
-    post "/user", to "index.empty"
+    post "/user", to: "index.empty"
   end
 end