runtime(doc): clarify expand() for :terminal windows

While adding to the documentation, also mention the rolled-back key-translation
strategy in version9.txt

closes: #14069

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 2dc8f61..f1256b0 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -2540,6 +2540,9 @@
 		for a non-existing file is not included, unless {string} does
 		not start with '%', '#' or '<', see below.
 
+		For a |:terminal| window '%' expands to a '!' followed by
+		the command or shell that is run |terminal-bufname|
+
 		When {string} starts with '%', '#' or '<', the expansion is
 		done like for the |cmdline-special| variables with their
 		associated modifiers.  Here is a short overview:
diff --git a/runtime/doc/tags b/runtime/doc/tags
index b7e26ee..5c2eee3 100644
--- a/runtime/doc/tags
+++ b/runtime/doc/tags
@@ -10531,6 +10531,7 @@
 terminal	terminal.txt	/*terminal*
 terminal-api	terminal.txt	/*terminal-api*
 terminal-autoshelldir	terminal.txt	/*terminal-autoshelldir*
+terminal-bufname	terminal.txt	/*terminal-bufname*
 terminal-client-server	terminal.txt	/*terminal-client-server*
 terminal-close	terminal.txt	/*terminal-close*
 terminal-colors	os_unix.txt	/*terminal-colors*
diff --git a/runtime/doc/terminal.txt b/runtime/doc/terminal.txt
index c5331fa..3720603 100644
--- a/runtime/doc/terminal.txt
+++ b/runtime/doc/terminal.txt
@@ -1,4 +1,4 @@
-*terminal.txt*	For Vim version 9.1.  Last change: 2023 Nov 08
+*terminal.txt*	For Vim version 9.1.  Last change: 2024 Feb 21
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -208,6 +208,7 @@
 			[command].  Use `:execute` if you must have a Vim
 			command following in the same line.
 
+							*terminal-bufname*
 			A new buffer will be created, using [command] or
 			'shell' as the name, prefixed with a "!".  If a buffer
 			by this name already exists a number is added in
diff --git a/runtime/doc/version9.txt b/runtime/doc/version9.txt
index 29dbfb8..7b9a366 100644
--- a/runtime/doc/version9.txt
+++ b/runtime/doc/version9.txt
@@ -1,4 +1,4 @@
-*version9.txt*  For Vim version 9.1.  Last change: 2024 Jan 05
+*version9.txt*  For Vim version 9.1.  Last change: 2024 Feb 21
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -41578,6 +41578,9 @@
 ==============================================================================
 INCOMPATIBLE CHANGES				*incompatible-9.2*
 
+Improved/Different MS-Windows mapping support
+|w32-experimental-keycode-trans-strategy|
+
 ==============================================================================
 IMPROVEMENTS					*improvements-9.2*