[7.x] [DOCS] Document how to switch ILM policies (#73967)#74632

Merged

jrodewig merged 1 commit intoelastic:7.xfrom jrodewig:backport/7.x/pr-73967

Jun 28, 2021

+71

Commits on Jun 28, 2021

[DOCS] Document how to switch ILM policies (#73967 )
jrodewig
committed