Update quickstart.mdx (#200)

Author: fengjessica

dgraph/graphql/quickstart.mdx

@@ -18,7 +18,7 @@ just by deploying the GraphQL schema of your API. Dgraph does the rest!
 
 ## Step 1: Run Dgraph
 
-The easiest way to get Dgraph up and running is on Hypermode.
+The recommended way to get started with Dgraph is by using the official [Dgraph Docker image](https://hub.docker.com/r/dgraph/standalone).
 
 ## Step 2: Deploy a GraphQL Schema