Fix sample command (#13789)
Fix sample command (#13789)

dev doesn't seem to exist
JeromeFitz/next.js,zeit/next.js,flybayer/next.js,azukaru/next.js,flybayer/next.js,JeromeFitz/next.js,azukaru/next.js,flybayer/next.js,flybayer/next.js,JeromeFitz/next.js,zeit/next.js,JeromeFitz/next.js,azukaru/next.js,azukaru/next.js,zeit/next.js