note FAQ 5.4 issue

Update FAQ 5.4 needs to be synced with tools that are being g written.

faq.md

@@ -1900,6 +1900,9 @@ This means that the file is generated by a tool from the
 using files found in the
 [ioccc-src/winner repo](https://github.com/ioccc-src/winner).
 
+XXX - the text below for this FAQ entry needs to be updated - XXX
+XXX - the text needs to be synced with what tools be written will do - XXX
+
 You will find a HTML comment of the form indicating which tool
 was used to generate the contents: