docs: update video links in README and Chinese README to point to YouTube

Author: Simon-He95

README.md

@@ -65,10 +65,9 @@ These features make the library especially suited for real-time, AI-driven, and
 
 This short video introduces the vue-renderer-markdown component library and highlights key features and usage patterns.
 
-[![Watch the intro on Bilibili](https://i1.hdslb.com/bfs/archive/f073718bd0e51acaea436d7197880478213113c6.jpg)](https://www.bilibili.com/video/BV17Z4qzpE9c/)
-
-Watch the intro on Bilibili: [Open in Bilibili](https://www.bilibili.com/video/BV17Z4qzpE9c/)
+[![Watch the intro on YouTube](https://i1.hdslb.com/bfs/archive/f073718bd0e51acaea436d7197880478213113c6.jpg)](https://youtu.be/qUggGP5bWNw)
 
+Watch the intro on YouTube: [Open in YouTube](https://youtu.be/qUggGP5bWNw)
 
 ## Features
 
@@ -891,7 +890,6 @@ Notes:
   import type { MyMarkdownProps } from 'vue-renderer-markdown/dist/types'
   ```
 
-
 ## Vite Configuration & Worker Usage (Important!)
 
 If you're using Vite, you only need the following minimal configuration:

README.zh-CN.md

@@ -239,10 +239,10 @@ setDefaultMathOptions({ commands: ['infty', 'perp'], escapeExclamation: true })
 
 ```ts
 // 翻译映射
-const md = getMarkdown('editor-1', { i18n: { 'common.copy': '复制' } })
-
 // 翻译函数（例如使用 vue-i18n）
 import { useI18n } from 'vue-i18n'
+
+const md = getMarkdown('editor-1', { i18n: { 'common.copy': '复制' } })
 const { t } = useI18n()
 const md2 = getMarkdown('editor-1', { i18n: (key: string) => t(key) })
 ```
@@ -274,9 +274,9 @@ This is **bold** and this is *italic*.
 - List item 1
 - List item 2
 
-```javascript
+\`\`\`javascript
 console.log('Code block!')
-```
+\`\`\`
 `
 </script>
 
@@ -425,11 +425,11 @@ export default defineConfig({
 import KatexWorker from 'vue-renderer-markdown/workers/katexRenderer.worker?worker'
 import { setKaTeXWorker } from 'vue-renderer-markdown/workers/katexWorkerClient'
 
-setKaTeXWorker(new KatexWorker())
-
 import MermaidWorker from 'vue-renderer-markdown/workers/mermaidParser.worker?worker'
 import { setMermaidWorker } from 'vue-renderer-markdown/workers/mermaidWorkerClient'
 
+setKaTeXWorker(new KatexWorker())
+
 setMermaidWorker(new MermaidWorker())
 ```
 
@@ -465,6 +465,7 @@ setMermaidWorker(new MermaidWorker())
 
 ```ts
 import { getUseMonaco } from './src/components/CodeBlockNode/monaco'
+
 getUseMonaco()
 ```