Made some small improvements to docs/topics/http/sessions.txt
Made some small improvements to docs/topics/http/sessions.txt

--HG--
extra : convert_revision : svn%3Abcc190cf-cafb-0310-a4f2-bffc1f526a37/django/trunk%4010839

Belgabor/django,Belgabor/django,Belgabor/django