[1.5.x] Fix rst syntax error.
[1.5.x] Fix rst syntax error.

Thanks Chris Rebert for the report.

Backport of d75a54c.

hasadna/django,alx-eu/django,ccn-2m/django,hasadna/django,alx-eu/django,alx-eu/django,alx-eu/django,imtapps/django-imt-fork,bliti/django-nonrel-1.5,hasadna/django,imtapps/django-imt-fork,ccn-2m/django,imtapps/django-imt-fork,bliti/django-nonrel-1.5,ccn-2m/django,bliti/django-nonrel-1.5,ccn-2m/django