Update runtime files
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index 7d6b92d..adc1d56 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -5368,7 +5368,9 @@
*hl-MatchParen*
MatchParen Character under the cursor or just before it, if it
is a paired bracket, and its match. |pi_paren.txt|
-
+ *hl-MessageWindow*
+MessageWindow Messages popup window used when 'cmdheight' is zero. If not
+ defined |hl-WarningMsg| is used.
*hl-ModeMsg*
ModeMsg 'showmode' message (e.g., "-- INSERT --").
*hl-MoreMsg*
@@ -5388,6 +5390,10 @@
PmenuSbar Popup menu: Scrollbar.
*hl-PmenuThumb*
PmenuThumb Popup menu: Thumb of the scrollbar.
+ *hl-PopupNotification*
+PopupNotification
+ Popup window created with |popup_notification()|. If not
+ defined |hl-WarningMsg| is used.
*hl-Question*
Question |hit-enter| prompt and yes/no questions.
*hl-QuickFixLine*