重新布局，添加教程

package.json

@@ -14,6 +14,8 @@
     "@codemirror/lang-javascript": "^6.2.3",
     "@vueuse/core": "^12.7.0",
     "codemirror": "^6.0.1",
+    "github-markdown-css": "^5.8.1",
+    "marked": "^15.0.7",
     "naive-ui": "^2.41.0",
     "normalize.css": "^8.0.1",
     "vue": "^3.5.13",