update sv-x-k12 translation
update sv-x-k12 translation

Change-Id: I031479a6455561c1a0b02a9111d95505d28bee6b
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/273400
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms