Update runtime files.
diff --git a/runtime/doc/intro.txt b/runtime/doc/intro.txt
index 24ceb47..0f84934 100644
--- a/runtime/doc/intro.txt
+++ b/runtime/doc/intro.txt
@@ -1,4 +1,4 @@
-*intro.txt* For Vim version 8.0. Last change: 2017 Sep 04
+*intro.txt* For Vim version 8.0. Last change: 2018 Jan 24
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -138,7 +138,7 @@
see the message. If you don't want that, e.g. because it is a security
issue, send it to <bugs@vim.org>, this only goes to the Vim maintainer
(that's Bram).
-2. Open issue on GitHub: https://github.com/vim/vim/issues
+2. Open an issue on GitHub: https://github.com/vim/vim/issues
The text will be forwarded to the vim-dev maillist.
Please be brief; all the time that is spent on answering mail is subtracted