Fix broken link
Fix broken link

It's "configuration" in the URL - the current link gives a 404. Also,
add "." at end of sentence.

Change-Id: I6cda57f0d7027a2b697b9a562cc13d0821428cbc
(cherry picked from commit 289fcea89e0163a475899d44031beed895697325)

vmturbo/nova,vmturbo/nova,vmturbo/nova,vmturbo/nova