feat(head): add bootcdn support
feat(head): add bootcdn support
WhitePrime/whiteprime.github.io,WhitePrime/whiteprime.github.io,KeJunMao/jekyll-theme-mdui,KeJunMao/jekyll-theme-mdui,KeJunMao/jekyll-theme-mdui,WhitePrime/whiteprime.github.io