include comma to make fullstory snippet k5 valid
include comma to make fullstory snippet k5 valid

Change-Id: I7d1ec7899a8638b812c4ca5ce8da11987ab5ffc9
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/273423
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>
Reviewed-by: Jeff Largent <346e902a52b2e977849f8d9756038ae5621be6de@instructure.com>
QA-Review: Ethan Vizitei <73eeb0b2f65d05a906adf3b21ee1f9f5a2aa3c1c@instructure.com>
Product-Review: Ethan Vizitei <73eeb0b2f65d05a906adf3b21ee1f9f5a2aa3c1c@instructure.com>

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