Update runtime files
diff --git a/runtime/doc/popup.txt b/runtime/doc/popup.txt
index f35134a..cff3b9e 100644
--- a/runtime/doc/popup.txt
+++ b/runtime/doc/popup.txt
@@ -1,4 +1,4 @@
-*popup.txt*  For Vim version 8.1.  Last change: 2019 Sep 03
+*popup.txt*  For Vim version 8.1.  Last change: 2019 Sep 04
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar