doc: fix outdated link FSEvents

PR-URL: #20949
Fixes: #20853
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

Author: amitbend

doc/api/fs.md

@@ -4666,7 +4666,7 @@ the file contents.
 [`AHAFS`]: https://www.ibm.com/developerworks/aix/library/au-aix_event_infrastructure/
 [`Buffer.byteLength`]: buffer.html#buffer_class_method_buffer_bytelength_string_encoding
 [`Buffer`]: buffer.html#buffer_buffer
-[`FSEvents`]: https://developer.apple.com/library/mac/documentation/Darwin/Conceptual/FSEvents_ProgGuide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40005289-CH1-SW1
+[`FSEvents`]: https://developer.apple.com/documentation/coreservices/file_system_events
 [`ReadDirectoryChangesW`]: https://msdn.microsoft.com/en-us/library/windows/desktop/aa365465%28v=vs.85%29.aspx
 [`ReadStream`]: #fs_class_fs_readstream
 [`URL`]: url.html#url_the_whatwg_url_api