add markdown-it package support

Author: DangoRepo

package.json

@@ -17,6 +17,7 @@
   "license": "ISC",
   "devDependencies": {
     "@antfu/eslint-config": "^4.13.2",
+    "@types/markdown-it": "^14.1.2",
     "eslint": "^9.25.1",
     "jiti": "^2.4.2",
     "vitepress": "^1.6.3",