runtime(doc): fix some style issues and remove obsolete docs

Signed-off-by: Hirohito Higashi <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/various.txt b/runtime/doc/various.txt
index 8416a17..f6c0ae9 100644
--- a/runtime/doc/various.txt
+++ b/runtime/doc/various.txt
@@ -1,4 +1,4 @@
-*various.txt*   For Vim version 9.1.  Last change: 2025 May 15
+*various.txt*   For Vim version 9.1.  Last change: 2025 Jun 07
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -41,7 +41,6 @@
 			when 'tabpanel' includes an item that doesn't trigger
 			automatic updating.
 
-
 							*N<Del>*
 <Del>			When entering a number: Remove the last digit.
 			Note: if you like to use <BS> for this, add this