[1.0.X] Fixed #10031: updated SQLite database docs to more strongly indicate...

[1.0.X] Fixed #10031: updated SQLite database docs to more strongly indicate the problems with versions before 3.3.6. Thanks, ramiro. Backport of r10311 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@10312 bcc190cf-cafb-0310-a4f2-bffc1f526a37