doc: add missing YAML labels

PR-URL: #23810
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Yuta Hiroto <hello@hiroppy.me>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

doc/api/cli.md

@@ -156,7 +156,7 @@ and profile Node.js instances. The tools attach to Node.js instances via a
 tcp port and communicate using the [Chrome DevTools Protocol][].
 
 ### `--loader=file`
-<!--
+<!-- YAML
 added: v9.0.0
 -->