ghost/core/server/lib/mobiledoc/cards/card-markdown.js

// this card is just an alias of the `markdown` card which is necessary because
// our markdown-only editor was using the `card-markdown` card name
const markdownCard = require('./markdown');
const createCard = require('../create-card');

module.exports = createCard(
    Object.assign({}, markdownCard, {name: 'card-markdown'})
);