Update priv/rest.ex.eex

Co-authored-by: Philip Sampaio <[email protected]>

priv/rest.ex.eex

@@ -25,7 +25,7 @@ defmodule <%= context.module_name %> do
     }
 <% end %>
 """
-@type <%= if map_size(type_fields) == 0 do "#{type_name}() :: %{}" else "#{type_name}() :: %{String.t => any()}" end %>
+@type <%= if Enum.empty?(type_fields) do "#{type_name}() :: %{}" else "#{type_name}() :: %{String.t => any()}" end %>
 <% end %>
 
 <%= Enum.map(context.actions,