Update runtime files.
diff --git a/runtime/doc/quickfix.txt b/runtime/doc/quickfix.txt
index ae45819..1013023 100644
--- a/runtime/doc/quickfix.txt
+++ b/runtime/doc/quickfix.txt
@@ -1,4 +1,4 @@
-*quickfix.txt*  For Vim version 8.2.  Last change: 2019 Dec 07
+*quickfix.txt*  For Vim version 8.2.  Last change: 2020 Jan 06
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar