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

Change-Id: I35fc7821a257e2f7582759c420bf439d87112a53
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/224477
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

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