patch 9.1.0690: cannot set special highlight kind in popupmenu

Problem:  cannot set special highlight kind in popupmenu
Solution: add kind_hlgroup item to complete function
          (glepnir)

closes: #15561

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/insert.txt b/runtime/doc/insert.txt
index 2dd3e03..286c6d4 100644
--- a/runtime/doc/insert.txt
+++ b/runtime/doc/insert.txt
@@ -1,4 +1,4 @@
-*insert.txt*    For Vim version 9.1.  Last change: 2024 Jul 28
+*insert.txt*    For Vim version 9.1.  Last change: 2024 Aug 23
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1189,6 +1189,11 @@
 			attributes in the popup menu to apply cterm and gui
 			properties (with higher priority) like strikethrough
 			to the completion items
+	kind_hlgroup	an additional highlight group specifically for setting
+			the highlight attributes of the completion kind. When
+			this field is present, it will override the |hl-PmenuKind|
+			highlight group, allowing for the customization of
+			ctermfd and guifg properties for the completion kind
 
 All of these except "icase", "equal", "dup" and "empty" must be a string.  If
 an item does not meet these requirements then an error message is given and