doc: add missing metadata for settings.windowsHide

PR-URL: #19578
Refs: #17412
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

doc/api/cluster.md

@@ -701,6 +701,9 @@ changes:
   - version: v9.5.0
     pr-url: https://github.com/nodejs/node/pull/18399
     description: The `cwd` option is supported now.
+  - version: v9.4.0
+    pr-url: https://github.com/nodejs/node/pull/17412
+    description: The `windowsHide` option is supported now.
   - version: 8.2.0
     pr-url: https://github.com/nodejs/node/pull/14140
     description: The `inspectPort` option is supported now.