Fixing documentation

The env-file documentation had the link for the plugin incorrect
The jclouds documentation had no description nor link to the
required plugin
Doing make html in the doc folder complained about tfs in wrappers
so I added a new line

Change-Id: I61799c7a06d50486a08c31ba7db3d34965378e6f
Reviewed-on: https://review.openstack.org/36464
Reviewed-by: Leif Madsen <leif@leifmadsen.com>
Reviewed-by: Mathieu Gagné <mgagne@iweb.com>
Reviewed-by: Khai Do <zaro0508@gmail.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Reviewed-by: Antoine Musso <hashar@free.fr>
Approved: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Tested-by: Jenkins