change nuxt link to nitro

Author: Yuangwang

docs/nuxt/README.md

@@ -1,5 +1,5 @@
 # Nuxt on Firebase App Hosting
 
-Nuxt support on Firebase App Hosting is powered by the [community-supported Nitro preset](https://firebaseopensource.com/projects/FirebaseExtended/firebase-framework-tools::docs::nuxt).
+Nuxt support on Firebase App Hosting is powered by the [community-supported Nitro preset](https://firebaseopensource.com/projects/FirebaseExtended/firebase-framework-tools::docs::nitro).
 
 > **Community-supported:** While built in collaboration with Firebase App Hosting, the Nitro preset is not currently an official Google Cloud product. Support is best-effort only.