Remove extra whitespace on zuul message.

And extra div and p elements.

Change-Id: I2d4fcc32bc2eb056befeb274c5f1aeba99fb60ed
Reviewed-on: https://review.openstack.org/19993
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Approved: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Tested-by: Jenkins