update fa translation
update fa translation

Change-Id: Idb7d0b5e56d8593ff6419db3f7b3cb652b3448df
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/242585
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

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