Update runtime files.
diff --git a/runtime/doc/popup.txt b/runtime/doc/popup.txt
index 856132d..118bc9b 100644
--- a/runtime/doc/popup.txt
+++ b/runtime/doc/popup.txt
@@ -1,4 +1,4 @@
-*popup.txt* For Vim version 8.2. Last change: 2020 Sep 08
+*popup.txt* For Vim version 8.2. Last change: 2020 Sep 27
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -711,7 +711,7 @@
By default a double line is used all around when
'encoding' is "utf-8" and 'ambiwidth' is "single",
otherwise ASCII characters are used.
- scrollbar non-zero: show a scrollbar when the text doesn't fit.
+ scrollbar 1 or true: show a scrollbar when the text doesn't fit.
zero: do not show a scrollbar. Default is non-zero.
Also see |popup-scrollbar|.
scrollbarhighlight Highlight group name for the scrollbar. The