spec: fix quiz question creation spec

it was expecting an item that doesn't exist
so i changed it to look for the quiz title item

Change-Id: Ic1902aa40a7d74217aa93ef4e17e545635768f4a
Reviewed-on: https://gerrit.instructure.com/44227
Product-Review: Kyle Rosenbaum <kyler@instructure.com>
Reviewed-by: Kyle Rosenbaum <kyler@instructure.com>
QA-Review: Kyle Rosenbaum <kyler@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>