Cherry-pick to 7.9: Update internal links to external (#19947)#20000

Merged

EamonnTP merged 1 commit intoelastic:7.9from EamonnTP:backport/7.9/pr-19947

Jul 21, 2020

+13-7

Commits on Jul 16, 2020

Update internal links to external (elastic#19947 )

EamonnTP
authored and
Eamonn Smith
committed