[LyX/master] Update lib/doc/LFUNs.lyx

[Pavel Sanda]

commit 6c42feb137c43f1fad88c90a69a0cd94525dfec1
Author: Pavel Sanda <sanda at lyx.org>
Date:   Thu Jun 3 15:08:29 2021 +0200

    Update lib/doc/LFUNs.lyx

 lib/doc/LFUNs.lyx | 1259 +++++++++++++++++++++++++++++++++++++++--------------
 1 files changed, 938 insertions(+), 321 deletions(-)