quota: update Kconfig comment

f2fs support quota since commit 0abd675e ("f2fs: support plain
user/group quota"), let's document it.
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <20230413151412.30059-1-frank.li@vivo.com>

fs/quota/Kconfig

@@ -9,7 +9,7 @@ config QUOTA
 	help
 	  If you say Y here, you will be able to set per user limits for disk
 	  usage (also called disk quotas). Currently, it works for the
-	  ext2, ext3, ext4, jfs, ocfs2 and reiserfs file systems.
+	  ext2, ext3, ext4, f2fs, jfs, ocfs2 and reiserfs file systems.
 	  Note that gfs2 and xfs use their own quota system.
 	  Ext3, ext4 and reiserfs also support journaled quotas for which
 	  you don't need to run quotacheck(8) after an unclean shutdown.