Every service meant to be public work now on port 80 (#205)

Co-authored-by: Adam Bem <adam.bem@zoho.eu>
Reviewed-on: #205
Reviewed-by: Mikolaj Widla <widlam@noreply.example.com>

Samples/prettify/prettify.curl

@@ -1,3 +1,3 @@
-url = "http://localhost:5000/prettify"
+url = "http://localhost:5000/libxml/prettify"
 data = "@prettify.json"
 request = POST