doc: clarify docs fs.watch exception may be emitted

Fixes: nodejs#29894

doc/api/fs.md

@@ -3815,10 +3815,10 @@ to be notified of filesystem changes.
 * On Aix systems, this feature depends on [`AHAFS`][], which must be enabled.
 
 If the underlying functionality is not available for some reason, then
-`fs.watch` will not be able to function. For example, watching files or
-directories can be unreliable, and in some cases impossible, on network file
-systems (NFS, SMB, etc), or host file systems when using virtualization software
-such as Vagrant, Docker, etc.
+`fs.watch` will not be able to function (may an exception will be thrown).
+For example, watching files or directories can be unreliable, and in some
+cases impossible, on network file systems (NFS, SMB, etc), or host file systems
+when using virtualization software such as Vagrant, Docker, etc.
 
 It is still possible to use `fs.watchFile()`, which uses stat polling, but
 this method is slower and less reliable.