[7.x] [alerting] adds doc on JSON-expanded action variables and task manager max_workers (#92720)#93521

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kibanamachine merged 1 commit intoelastic:7.xfrom kibanamachine:backport/7.x/pr-92720

Mar 3, 2021

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Commits on Mar 3, 2021

[alerting] adds doc on JSON-expanded action variables and task manager max_workers (elastic#92720 )

pmuellr
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kibanamachine
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