chore: add script to build the docs

package.json

@@ -3,6 +3,7 @@
   "private": true,
   "scripts": {
     "build": "turbo run build --no-daemon",
+    "build:docs": "turbo run build --no-daemon --filter=docs",
     "dev": "turbo run dev --parallel --no-daemon",
     "lint": "biome lint --write",
     "format": "biome format --write",