fix(docs):Change Nuxt3 in the document to Nuxt4 (#135)

app/components/Logos.vue

@@ -2,7 +2,7 @@
   <div text-2xl font-300 inline-flex cursor-default>
     <div flex flex-col children:mx-auto>
       <img h-18 w-18 inline-block src="/nuxt.svg">
-      <span text-green5 mt--2>Nuxt 3</span>
+      <span text-green5 mt--2>Nuxt 4</span>
     </div>
     <div
       text="3xl gray4"

app/constants/index.ts

@@ -1,2 +1,2 @@
-export const appName = 'Vitesse for Nuxt 3'
-export const appDescription = 'Vitesse for Nuxt 3'
+export const appName = 'Vitesse for Nuxt 4'
+export const appDescription = 'Vitesse for Nuxt 4'