Update max-age in HSTS sample (#27452)
Update max-age in HSTS sample (#27452)

The previous paragraph mentions a max-age of 2 years, so the number of seconds should match.


flybayer/next.js,JeromeFitz/next.js,JeromeFitz/next.js,azukaru/next.js,azukaru/next.js,JeromeFitz/next.js,zeit/next.js,azukaru/next.js,flybayer/next.js,zeit/next.js,azukaru/next.js,flybayer/next.js,JeromeFitz/next.js,zeit/next.js,flybayer/next.js