[doc] disable the smart replacement of characters
[doc] disable the smart replacement of characters

--foo-bar is kept as it is and not replaced with &#8211;foo-bar
(so –foo-bar).

Other changes with no visible impact:
- ' is no more replaced with &#8217;
- " is not replaced with &#8220;, but with &quot;
- ’ _is_ now replaced with &#39;

Change-Id: Ic55bb7423b4b3df8009dba213f1ba43139823503

openstack/sahara-scenario,openstack/sahara-tests,openstack/sahara-scenario,openstack/sahara-tests,openstack/sahara-tests,openstack/sahara-scenario,openstack/sahara-tests