Fixed bad indentation in contenttypes code example so that cut and paste from doc will work.
Fixed bad indentation in contenttypes code example so that cut and paste from doc will work.

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extra : convert_revision : svn%3Abcc190cf-cafb-0310-a4f2-bffc1f526a37/django/trunk%4012253

adieu/django-nonrel,adieu/django-nonrel,adieu/django-nonrel