Fix next/prev navigation links in the docs when were in a versioned editor. (#4888)
Fix next/prev navigation links in the docs when were in a versioned editor. (#4888)


playi/pxt,switch-education/pxt,Microsoft/pxt,switch-education/pxt,playi/pxt,Microsoft/pxt,switch-education/pxt,playi/pxt,switch-education/pxt,switch-education/pxt,playi/pxt,Microsoft/pxt,switchinnovations/pxt,switchinnovations/pxt,Microsoft/pxt,Microsoft/pxt,switchinnovations/pxt,switchinnovations/pxt