doc: update fs.watch() availability for IBM i

Add a line that IBM i does not support `fs.watch()`. Fixes: #34607 Refs: https://nodejs.org/docs/latest/api/fs.html#fs_availability PR-URL: #34611 Reviewed-By: Richard Lau <[email protected]> Reviewed-By: James M Snell <[email protected]>
nodejs · Aug 7, 2020 · 0dff5bc · 0dff5bc
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diff --git a/doc/api/fs.md b/doc/api/fs.md
@@ -4016,6 +4016,7 @@ to be notified of filesystem changes.
 * On SunOS systems (including Solaris and SmartOS), this uses [`event ports`][].
 * On Windows systems, this feature depends on [`ReadDirectoryChangesW`][].
 * On Aix systems, this feature depends on [`AHAFS`][], which must be enabled.
+* On IBM i systems, this feature is not supported.
 
 If the underlying functionality is not available for some reason, then
 `fs.watch()` will not be able to function and may thrown an exception.