Update website, fix typo
Update website, fix typo

Fixes JodaOrg/jodaorg.github.io#4

fengshao0907/joda-collect,JodaOrg/joda-collect,mosoft521/joda-collect,fengshao0907/joda-collect,mosoft521/joda-collect,JodaOrg/joda-collect,mosoft521/joda-collect