Update runtime files.
diff --git a/runtime/doc/popup.txt b/runtime/doc/popup.txt
index 543d0aa..12e1cf1 100644
--- a/runtime/doc/popup.txt
+++ b/runtime/doc/popup.txt
@@ -1,10 +1,10 @@
-*popup.txt*  For Vim version 8.1.  Last change: 2019 Nov 17
+*popup.txt*  For Vim version 8.1.  Last change: 2019 Nov 30
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
 
 
-Displaying text in a floating window.			*popup* *popup-window*
+Displaying text in a floating window.	*popup* *popup-window* *popupwin*
 
 
 1. Introduction			|popup-intro|