update text to read Acceptable Use Policy
update text to read Acceptable Use Policy

fixes COMMS-849

Test Plan:
- go to a Account settings page
- Scroll down to the Terms of Service
  section
- notice that it has been renamed to
  Acceptable Use Policy

Change-Id: Ic0811842113a823db1d4b224d4c8da61bd2edf32
Reviewed-on: https://gerrit.instructure.com/141445
Reviewed-by: Aaron Kc Hsu <089edc94045de3d9f5f372fb17706d21afcc259f@instructure.com>
Tested-by: Jenkins
Reviewed-by: Landon Gilbert-Bland <60d9ff23682c863d36b48b4c32c5ce5f434d29c0@instructure.com>
QA-Review: Aaron Kc Hsu <089edc94045de3d9f5f372fb17706d21afcc259f@instructure.com>
Product-Review: Steven Burnett <a0b450117c5d20a22d5c4d52bb8ae13adee003d8@instructure.com>

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