runtime(doc): update index.txt, windows.txt and version9.txt

closes: #16357

Co-authored-by: Aliaksei Budavei <32549825+zzzyxwvut@users.noreply.github.com>
Signed-off-by: h-east <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/windows.txt b/runtime/doc/windows.txt
index 5a5d571..8120628 100644
--- a/runtime/doc/windows.txt
+++ b/runtime/doc/windows.txt
@@ -1,4 +1,4 @@
-*windows.txt*   For Vim version 9.1.  Last change: 2024 Dec 29
+*windows.txt*   For Vim version 9.1.  Last change: 2025 Jan 02
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -263,8 +263,8 @@
 		will be equalized only vertically.
 		Doesn't work for |:execute| and |:normal|.
 
-						*:hor* *:horizontal*
-:hor[izontal] {cmd}
+						*:ho* *:horizontal*
+:ho[rizontal] {cmd}
 		Execute {cmd}.  Currently only makes a difference for
 		`horizontal wincmd =`, which will equalize windows only
 		horizontally.
@@ -968,8 +968,8 @@
   trigger the ATTENTION and responding "A" for Abort, the preview window will
   become empty.
 
-						*:pta* *:ptag*
-:pta[g][!] [tagname]
+						*:pt* *:ptag*
+:pt[ag][!] [tagname]
 		Does ":tag[!] [tagname]" and shows the found tag in a
 		"Preview" window without changing the current buffer or cursor
 		position.  If a "Preview" window already exists, it is re-used