Update runtime files
diff --git a/runtime/doc/mlang.txt b/runtime/doc/mlang.txt
index 724ec46..8997e1c 100644
--- a/runtime/doc/mlang.txt
+++ b/runtime/doc/mlang.txt
@@ -1,4 +1,4 @@
-*mlang.txt*     For Vim version 9.0.  Last change: 2020 Aug 15
+*mlang.txt*     For Vim version 9.0.  Last change: 2022 Sep 17
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar