In intro text, site configuration link should point to admin/settings

Yet another one-liner from your good pal, webchick! ;)

Inspired by this comment about admin/settings being hard to find, I checked the default install message. Turns out that there are two links in the following sentence:

"Once logged in, you can visit the administration section and set up your site's configuration."

However, both of them take you to just admin... the second one should logically be admin/settings, since that's where you'd actually go to setup your site's configuration.

Attached patch fixes this problem.