Update runtime files
diff --git a/runtime/doc/digraph.txt b/runtime/doc/digraph.txt
index bfcf135..0801e3a 100644
--- a/runtime/doc/digraph.txt
+++ b/runtime/doc/digraph.txt
@@ -1,4 +1,4 @@
-*digraph.txt*   For Vim version 8.2.  Last change: 2020 Jul 16
+*digraph.txt*   For Vim version 8.2.  Last change: 2021 Jul 19
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar