Update runtime files
diff --git a/runtime/doc/testing.txt b/runtime/doc/testing.txt
index eef3227..8dc6dc3 100644
--- a/runtime/doc/testing.txt
+++ b/runtime/doc/testing.txt
@@ -1,4 +1,4 @@
-*testing.txt*	For Vim version 8.2.  Last change: 2021 Jun 21
+*testing.txt*	For Vim version 8.2.  Last change: 2021 Jun 23
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar