Update runtime files.
diff --git a/runtime/doc/usr_12.txt b/runtime/doc/usr_12.txt
index 13401b1..6da0830 100644
--- a/runtime/doc/usr_12.txt
+++ b/runtime/doc/usr_12.txt
@@ -355,4 +355,4 @@
 
 Next chapter: |usr_20.txt|  Typing command-line commands 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: