Change redirect status to 302 (#6562)
Change redirect status to 302 (#6562)

As discussed in #6546, changing redirect status to 302, so the redirect is only temporary
BlancheXu/test,flybayer/next.js,zeit/next.js,azukaru/next.js,flybayer/next.js,BlancheXu/test,JeromeFitz/next.js,zeit/next.js,azukaru/next.js,JeromeFitz/next.js,JeromeFitz/next.js,flybayer/next.js,flybayer/next.js,zeit/next.js,azukaru/next.js,BlancheXu/test,azukaru/next.js,JeromeFitz/next.js