Update runtime files.
diff --git a/runtime/doc/usr_23.txt b/runtime/doc/usr_23.txt
index 049ca20..c09e5b9 100644
--- a/runtime/doc/usr_23.txt
+++ b/runtime/doc/usr_23.txt
@@ -340,4 +340,4 @@
 
 Next chapter: |usr_24.txt|  Inserting quickly
 
-Copyright: see |manual-copyright|  vim:tw=78:ts=8:ft=help:norl:
+Copyright: see |manual-copyright|  vim:tw=78:ts=8:noet:ft=help:norl: