bugfix: Blank lines are required to join RST templates

bugfix: Blank lines are required to join RST templates

Blank lines are required to correctly join multiple RST templates.
Otherwise their text will be merged into one paragraph and formatting
tags will be ignored.

Change-Id: I6885019f7af2fd2201b9f30496d78200a0432e8e
JIRA: VSPERF-181
Signed-off-by: Martin Klozik <martinx.klozik@intel.com>
Reviewed-by: Maryam Tahhan <maryam.tahhan@intel.com>
Reviewed-by: Billy O Mahony <billy.o.mahony@intel.com>
Reviewed-by: Al Morton <acmorton@att.com>
Reviewed-by: Brian Castelli <brian.castelli@spirent.com>