update it translation
update it translation

Change-Id: I9ccf68897b9fe5d64c291abf9a8a45ee3dce22f1
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/252073
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

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