nodejs-ca: Add download file - index.md (#1433)
nodejs-ca: Add download file - index.md (#1433)

* nodejs-ca: Add download file - index.md

* Change some proposed translations at the PR

phillipj/new.nodejs.org,nodejs/new.nodejs.org,nodejs/new.nodejs.org,yous/new.nodejs.org,phillipj/new.nodejs.org,yous/new.nodejs.org