Fix typo in ini block section
Fix typo in ini block section

Without the block directive, the generated HTML
has both the ini css class as well as the python css class.

<div class="code ini highlight-python">

instead of

<div class="highlight-ini">

Related-Bug: #1439920

Change-Id: I981eef92cdfbc6f125731096b939cefc8ad2d15e

vauxoo-tests/vauxoodocstheme,openstack/openstackdocstheme,vauxoo-tests/vauxoodocstheme,openstack/openstackdocstheme,vauxoo-tests/vauxoodocstheme,openstack/openstackdocstheme,openstack/openstackdocstheme