fix(docs): update Nuxt version from 3 to 4 in template features (#3780)

Author: rudrokhanpro

docs/content/templates/docs.md

@@ -32,8 +32,8 @@ The Nuxt UI team is dedicated to deliver the best integration and customization
   :::template-features
   ---
   features:
-    - label: Nuxt 3
-      content: Powered by Nuxt 3 for optimal performances and SEO.
+    - label: Nuxt 4
+      content: Powered by Nuxt 4 for optimal performances and SEO.
     - label: Markdown
       content: Write your pages with MDC thanks to Nuxt Content.
     - label: Nuxt UI

docs/content/templates/docus.md

@@ -90,8 +90,8 @@ The built files will be in the `.output` directory, ready for deployment to any
   :::template-features
   ---
   features:
-    - label: Nuxt 3
-      content: Powered by Nuxt 3 for optimal performances and SEO.
+    - label: Nuxt 4
+      content: Powered by Nuxt 4 for optimal performances and SEO.
     - label: Markdown
       content: Write your pages with MDC thanks to Nuxt Content.
     - label: Nuxt UI