Fix starting page for the multi-page guide.
Fix starting page for the multi-page guide.

alphalambda/codeworld,alphalambda/codeworld,google/codeworld,pranjaltale16/codeworld,alphalambda/codeworld,tgdavies/codeworld,pranjaltale16/codeworld,tgdavies/codeworld,google/codeworld,google/codeworld,tgdavies/codeworld,pranjaltale16/codeworld