Update runtime files.
diff --git a/runtime/doc/editing.txt b/runtime/doc/editing.txt
index 7f30e54..4c4de79 100644
--- a/runtime/doc/editing.txt
+++ b/runtime/doc/editing.txt
@@ -1,4 +1,4 @@
-*editing.txt* For Vim version 8.2. Last change: 2020 Dec 19
+*editing.txt* For Vim version 8.2. Last change: 2021 Jan 08
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -1014,7 +1014,7 @@
*write-permissions*
When writing a new file the permissions are read-write. For unix the mask is
-0666 with additionally umask applied. When writing a file that was read Vim
+0o666 with additionally umask applied. When writing a file that was read Vim
will preserve the permissions, but clear the s-bit.
*write-readonly*