fix: contentful sync (#206)

packages/medusa-plugin-contentful/src/loaders/check-types.js

@@ -11,6 +11,7 @@ const checkContentTypes = async (container) => {
     if (!product) {
       throw Error("Content type: `product` is missing in Contentful")
     }
+
     if (!variant) {
       throw Error("Content type: `productVariant` is missing in Contentful")
     }