runtime(doc): documentation updates

This is a collection of various improvements to the help pages

closes #12790

Co-authored-by: Houl <anwoku@yahoo.de>
Co-authored-by: Doug Kearns <dougkearns@gmail.com>
Co-authored-by: Adri Verhoef <a3@a3.xs4all.nl>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/usr_05.txt b/runtime/doc/usr_05.txt
index f43b239..0ab0301 100644
--- a/runtime/doc/usr_05.txt
+++ b/runtime/doc/usr_05.txt
@@ -1,4 +1,4 @@
-*usr_05.txt*	For Vim version 9.0.  Last change: 2019 May 23
+*usr_05.txt*	For Vim version 9.0.  Last change: 2023 Aug 10
 
 		     VIM USER MANUAL - by Bram Moolenaar