fix link in with-react-with-styles sample (#6438)
fix link in with-react-with-styles sample (#6438)

with-aphrodite example link didn't work properly
flybayer/next.js,JeromeFitz/next.js,zeit/next.js,BlancheXu/test,flybayer/next.js,zeit/next.js,azukaru/next.js,JeromeFitz/next.js,azukaru/next.js,zeit/next.js,JeromeFitz/next.js,BlancheXu/test,flybayer/next.js,azukaru/next.js,BlancheXu/test,azukaru/next.js,JeromeFitz/next.js,flybayer/next.js