Add about `DaimonSkycrawlers::SitemapParser#parse` return value
Add about `DaimonSkycrawlers::SitemapParser#parse` return value

bm-sms/daimon-skycrawlers,bm-sms/daimon-skycrawlers,bm-sms/daimon_skycrawlers,bm-sms/daimon_skycrawlers,bm-sms/daimon_skycrawlers