Update index.html.js

Fix graphql-server link to make it point to a non-deprecated package (picked the express one)

Author: helfer

site/code/index.html.js

@@ -87,7 +87,7 @@ app.use('/graphql', graphqlHTTP({
 app.listen(4000, () => console.log('Now browse to localhost:4000/graphql'));
 \`\`\`
 
-#### [graphql-server](http://dev.apollodata.com/tools/graphql-server/index.html) ([github](https://github.com/apollostack/graphql-server)) ([npm](https://www.npmjs.com/package/graphql-server))
+#### [graphql-server](http://dev.apollodata.com/tools/graphql-server/index.html) ([github](https://github.com/apollostack/graphql-server)) ([npm](https://www.npmjs.com/package/graphql-server-express))
 
 A set of GraphQL server packages from Apollo that work with various Node.js HTTP frameworks (Express, Connect, Hapi, Koa etc).