Documentation updates

doc/installation/PluginDoc.vue

@@ -0,0 +1,22 @@
+<template>
+    <DocSectionText v-bind="$attrs">
+        <p>PrimeVue plugin is required to be installed with the <i>use</i> function to set up the default <NuxtLink to="/theming">configuration</NuxtLink>.</p>
+    </DocSectionText>
+    <DocSectionCode :code="code" hideToggleCode importCode hideCodeSandbox hideStackBlitz />
+</template>
+
+<script>
+export default {
+    data() {
+        return {
+            code: {
+                basic: `import { createApp } from 'vue';
+import PrimeVue from 'primevue/config';
+
+const app = createApp(App);
+app.use(PrimeVue);`
+            }
+        };
+    }
+};
+</script>