Update runtime files
diff --git a/runtime/doc/gui_w32.txt b/runtime/doc/gui_w32.txt
index fda3618..30e2287 100644
--- a/runtime/doc/gui_w32.txt
+++ b/runtime/doc/gui_w32.txt
@@ -199,7 +199,7 @@
One reason to add this is to be able to edit HTML files directly from Internet
Explorer. To enable this use the "Tools" menu, "Internet Options..." entry.
In the dialog select the "Programs" tab and select Vim in the "HTML editor"
-choice. If it's not there than installing didn't work properly.
+choice. If it's not there then installing didn't work properly.
Doing this manually can be done with this script: