patch 9.1.1020: no way to get current selected item in a async context

Problem:  no way to get current selected item in a async context
Solution: add completed flag to show the entries of currently selected
          index item (@glepnir)

closes: #16451

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 9ba22dc..9d56f50 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -1,4 +1,4 @@
-*builtin.txt*	For Vim version 9.1.  Last change: 2025 Jan 15
+*builtin.txt*	For Vim version 9.1.  Last change: 2025 Jan 16
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1946,7 +1946,8 @@
 				typed text only, or the last completion after
 				no item is selected when using the <Up> or
 				<Down> keys)
-		   inserted	Inserted string. [NOT IMPLEMENTED YET]
+		   completed	Return a dictionary containing the entries of
+				the currently selected index item.
 
 							*complete_info_mode*
 		mode values are: