fix selenium specs

fixes: CNVS-12304

test plan:

This only changes a spec file, shouldn't need other testing

Change-Id: I5e33b85c7df8d7c29b2562e46d9d3fa21ff15b69
Reviewed-on: https://gerrit.instructure.com/33108
Reviewed-by: Bryan Madsen <bryan@instructure.com>
Product-Review: Bryan Madsen <bryan@instructure.com>
QA-Review: Bryan Madsen <bryan@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>