update it translation
update it translation

Change-Id: I54baf256ca2ac6ab6049861aac9ee94b54201e21
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/219743
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

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