patch 9.0.1855: mode() doesn't indicate command line for terminal

Problem:  mode() doesn't indicate command line for terminal
Solution: make it return 'ct' for command-line from Terminal mode

closes: #6265
closes: #13017
closes: #13018

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: h-east <h.east.727@gmail.com>
diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 2364547..507347d 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -6408,6 +6408,7 @@
 		   Rvc	    Virtual Replace mode completion |compl-generic|
 		   Rvx	    Virtual Replace mode |i_CTRL-X| completion
 		   c	    Command-line editing
+		   ct	    Command-line editing via Terminal-Job mode
 		   cv	    Vim Ex mode |gQ|
 		   ce	    Normal Ex mode |Q|
 		   r	    Hit-enter prompt