is external, target attr for link fields

src/components.d.ts

src/components/hy-banner/hy-banner.tsx

src/components/hy-banner/readme.md

src/components/hy-hero/hy-hero.tsx

src/components/hy-hero/readme.md

src/components/hy-introduction/hy-introduction.tsx

src/components/hy-introduction/readme.md

src/components/hy-link-list/hy-link-list.tsx

src/components/hy-shortcuts/hy-shortcuts.tsx

src/components/link-box-list/link-box-list.tsx

src/components/link-box/link-box.tsx

src/components/link/link.tsx