doc: report proper return type on urlPattern.test

Signed-off-by: bmuenzenmeyer <brian.muenzenmeyer@gmail.com>
PR-URL: #64831
Reviewed-By: Aviv Keller <me@aviv.sh>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: bmuenzenmeyer

doc/api/url.md

@@ -830,6 +830,7 @@ console.log(myPattern.exec('https://nodejs.org/docs/latest/api/dns.html'));
 
 * `input` {string | Object} A URL or URL parts
 * `baseURL` {string | undefined} A base URL string
+* Returns {boolean}
 
 Input can be a string or an object providing the individual URL parts. The
 object members can be any of `protocol`, `username`, `password`, `hostname`,