[1.3.X] Fixed #16782 -- Corrected a broken cross-reference to the database...

[1.3.X] Fixed #16782 -- Corrected a broken cross-reference to the database engine setting in the tutorial. Thanks to mjumbewu for the report and patch.

Backport of r16754 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.3.X@16755 bcc190cf-cafb-0310-a4f2-bffc1f526a37