Fix CORS issue in GraphQL example that prevented Apollo Studio from working (#27486)
Fix CORS issue in GraphQL example that prevented Apollo Studio from working (#27486)

Update example so Apollo Studio works properly 
azukaru/next.js,flybayer/next.js,zeit/next.js,JeromeFitz/next.js,azukaru/next.js,azukaru/next.js,JeromeFitz/next.js,JeromeFitz/next.js,flybayer/next.js,JeromeFitz/next.js,flybayer/next.js,flybayer/next.js,azukaru/next.js,zeit/next.js,zeit/next.js