bug 1525719: Add comment for locale-populate-react
bug 1525719: Add comment for locale-populate-react

Explain what the command is doing, and outline how to remove it when the
React pages are out of beta.

mozilla/kuma,a2sheppy/kuma,mozilla/kuma,SphinxKnight/kuma,SphinxKnight/kuma,escattone/kuma,Elchi3/kuma,SphinxKnight/kuma,a2sheppy/kuma,Elchi3/kuma,SphinxKnight/kuma,Elchi3/kuma,escattone/kuma,Elchi3/kuma,SphinxKnight/kuma,a2sheppy/kuma,mozilla/kuma,a2sheppy/kuma,a2sheppy/kuma,escattone/kuma,mozilla/kuma,Elchi3/kuma,SphinxKnight/kuma,mozilla/kuma