docs/guide-ja - changed "空っぽ" to "空" [ci skip]
docs/guide-ja/db-dao.md - changed "プリペア" to "準備" [ci skip]
docs/guide/db-query-builder.md - small fix [ci skip]
docs/guide-ja/db-query-builder.md - completed [ci skip]
Html helper guide chapter
docs/guide-ja/README.md - updated [ci skip]