chore: add docs:auto:md command

Author: pi0

package.json

@@ -23,6 +23,7 @@
   "scripts": {
     "automd": "jiti src/cli.ts",
     "docs:dev": "cd docs && bun i && bun dev",
+    "docs:automd": "pnpm automd --dir docs --input '**/*.md'  --watch",
     "build": "pnpm automd && unbuild",
     "dev": "vitest --coverage -u",
     "lint": "eslint --cache --ext .ts,.js,.mjs,.cjs . && prettier -c src",