Update runtime files.
diff --git a/runtime/doc/usr_toc.txt b/runtime/doc/usr_toc.txt
index 6a6543d..9247ba0 100644
--- a/runtime/doc/usr_toc.txt
+++ b/runtime/doc/usr_toc.txt
@@ -352,4 +352,4 @@
 
 ==============================================================================
 
-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: