Update lib/filters.js

Co-authored-by: Rohan Deb Sarkar <rohandebsarkar+git@gmail.com>

lib/filters.js

@@ -56,7 +56,7 @@ export const refFilter = (data, { domain, domainOnly, raw }) => {
   const cleanUrl = url => {
     try {
       if (url === '') {
-        return 'direct';
+        return 'direct/none';
       }
 
       const { hostname, origin, pathname, searchParams, protocol } = new URL(url);