[Docs] Updated cookbook/elastic R3 - intro
[Docs] Updated cookbook/elastic R3 - intro

pkarw/vue-storefront,pkarw/vue-storefront,pkarw/vue-storefront,DivanteLtd/vue-storefront,DivanteLtd/vue-storefront,pkarw/vue-storefront,DivanteLtd/vue-storefront,DivanteLtd/vue-storefront