Update runtime files.
diff --git a/runtime/doc/arabic.txt b/runtime/doc/arabic.txt
index 0572b85..2303a2b 100644
--- a/runtime/doc/arabic.txt
+++ b/runtime/doc/arabic.txt
@@ -319,4 +319,4 @@
 
 No other bugs are known to exist.
 
- vim:tw=78:ts=8:ft=help:norl:
+ vim:tw=78:ts=8:noet:ft=help:norl: