patch 9.1.1505: not possible to return completion type for :ex command

Problem:  not possible to return command-line completion type for :ex
          command
Solution: make getcmdcompltype() accept an optional and return the
          command-line completion for that arg (Shougo Matsushita).

closes: #17606

Signed-off-by: Shougo Matsushita <Shougo.Matsu@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/usr_41.txt b/runtime/doc/usr_41.txt
index ffa6fcb..9b8cdc2 100644
--- a/runtime/doc/usr_41.txt
+++ b/runtime/doc/usr_41.txt
@@ -1,4 +1,4 @@
-*usr_41.txt*	For Vim version 9.1.  Last change: 2025 Apr 27
+*usr_41.txt*	For Vim version 9.1.  Last change: 2025 Jul 03
 
 		     VIM USER MANUAL - by Bram Moolenaar
 
@@ -1100,8 +1100,7 @@
 Command line:					*command-line-functions*
 	getcmdcomplpat()	get completion pattern of the current command
 				line
-	getcmdcompltype()	get the type of the current command line
-				completion
+	getcmdcompltype()	get the type of the command line completion
 	getcmdline()		get the current command line input
 	getcmdprompt()		get the current command line prompt
 	getcmdpos()		get position of the cursor in the command line