fix(nuxt): add nuxt/content to package.json

Author: k3ii

packages/frontendmu-nuxt/package.json

@@ -14,6 +14,7 @@
     "codegen": "playwright codegen"
   },
   "dependencies": {
+    "@nuxt/content": "^2.13.2",
     "@nuxt/fonts": "^0.7.1",
     "@nuxt/icon": "^1.4.5",
     "@nuxt/image": "^1.7.0",