Update runtime files
diff --git a/runtime/doc/mbyte.txt b/runtime/doc/mbyte.txt
index e5e903e..165e931 100644
--- a/runtime/doc/mbyte.txt
+++ b/runtime/doc/mbyte.txt
@@ -1,4 +1,4 @@
-*mbyte.txt*     For Vim version 8.2.  Last change: 2022 Jan 08
+*mbyte.txt*     For Vim version 8.2.  Last change: 2022 Jan 20
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar et al.