doc: add ignore option to fs.watch documentation

Author: mcollina

doc/api/fs.md

@@ -1837,6 +1837,10 @@ added:
   * `overflow` {string} Either `'ignore'` or `'throw'` when there are more events to be
     queued than `maxQueue` allows. `'ignore'` means overflow events are dropped and a
     warning is emitted, while `'throw'` means to throw an exception. **Default:** `'ignore'`.
+  * `ignore` {string|RegExp|Function|Array} Pattern(s) to ignore. Strings are
+    glob patterns (using [`minimatch`][]), RegExp patterns are tested against
+    the filename, and functions receive the filename and return `true` to
+    ignore. **Default:** `undefined`.
 * Returns: {AsyncIterator} of objects with the properties:
   * `eventType` {string} The type of change
   * `filename` {string|Buffer|null} The name of the file changed.
@@ -4804,6 +4808,10 @@ changes:
   * `encoding` {string} Specifies the character encoding to be used for the
     filename passed to the listener. **Default:** `'utf8'`.
   * `signal` {AbortSignal} allows closing the watcher with an AbortSignal.
+  * `ignore` {string|RegExp|Function|Array} Pattern(s) to ignore. Strings are
+    glob patterns (using [`minimatch`][]), RegExp patterns are tested against
+    the filename, and functions receive the filename and return `true` to
+    ignore. **Default:** `undefined`.
 * `listener` {Function|undefined} **Default:** `undefined`
   * `eventType` {string}
   * `filename` {string|Buffer|null}
@@ -8764,6 +8772,7 @@ the file contents.
 [`fsPromises.utimes()`]: #fspromisesutimespath-atime-mtime
 [`inotify(7)`]: https://man7.org/linux/man-pages/man7/inotify.7.html
 [`kqueue(2)`]: https://www.freebsd.org/cgi/man.cgi?query=kqueue&sektion=2
+[`minimatch`]: https://github.com/isaacs/minimatch
 [`util.promisify()`]: util.md#utilpromisifyoriginal
 [bigints]: https://tc39.github.io/proposal-bigint
 [caveats]: #caveats