扩展 markdown-it这么写对吗，为什么没有效果呢

[deverdragon]

VMdEditor.use(vuepressTheme, { Prism, Hljs: hljs, codeHighlightExtensionMap: { vue: 'html', json: 'html' }, extends(md) { md.set({ html: true, breaks: true }) .use(MdEmjio, { defs: svgMap, shortcuts: Object.keys(svgMap).reduce<Record<string, string>>((obj, item) => { obj[item] = icon:${item} return obj }, {}) }) .use(MdHContainer) .use(MdContainer, 'header') .use(MdContainer, 'left', { render: function (tokens: any, idx: any) { if (tokens[idx].nesting === 1) { return '

' } else { return '

' } } }) .use(MdContainer, 'right', { render: function (tokens: any, idx: any) { if (tokens[idx].nesting === 1) { // opening tag return '

' } else { // closing tag return '

' } } }) .use(MdContainer, 'title') .use(MdNContainer) } }) .use(createEmojiPlugin()) .use(createMermaidPlugin()) .use(createTodoListPlugin({ color: '#0062ff' })) .use(createKatexPlugin()) .use(createCopyCodePlugin()) .use(createLineNumbertPlugin())