[7.7][docs] Backport: Add missing HTTP JSON input (#17999)#18265

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dedemorton merged 1 commit intoelastic:7.7from dedemorton:backport_17999_7.7

May 5, 2020

+29-26

Commits on May 5, 2020

[docs] Add missing HTTP JSON input (elastic#17999 )
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