npm_and_yarn in /docs for markdown-it, @vuepress/plugin-docsearch, vuepress, vuepress-plugin-seo2, vuepress-plugin-sitemap2 - Update #1272979917

npm_and_yarn in /docs for markdown-it, @vuepress/plugin-docsearch, vuepress, vuepress-plugin-seo2, vuepress-plugin-sitemap2 - Update #1272979917 #66