[6.4] [Docs] Add example for updating meta field (#35893)#38004

Merged

geekpete merged 1 commit intoelastic:6.4from geekpete:backport/6.4/pr-35893

Feb 13, 2019

+17-1

Commits on Jan 30, 2019

[Docs] Add example for updating meta field (#35893 )
geekpete
committed