feat(#542): use druxt-router for guide content

docs/nuxt/pages/guide/_.vue

@@ -1,36 +1,10 @@
 <template>
   <div>
-    <!-- TODO: Add breadcrumb / path -->
-    <NuxtContent
-      v-if="document"
+    <!-- @TODO: Add breadcrumb / path -->
+    <!-- @TODO: Multilingual content support -->
+    <DruxtRouter
       class="prose prose-sm sm:prose lg:prose-lg xl:prose-xl"
-      :document="document"
+      :path="`/en${$route.fullPath}`"
     />
   </div>
 </template>
-
-<script>
-export default {
-  name: "AppGuideDocument",
-
-  async asyncData({ $content, error, params, store, route }) {
-    const path = params.pathMatch || "README";
-    let response;
-    try {
-      response = await $content("guide/", params.pathMatch || "README").fetch();
-    } catch (e) {
-      return error({ message: "Document not found" });
-    }
-
-    store.commit("addRecent", { text: response.title, to: route.path });
-
-    return { document: response, path };
-  },
-
-  head() {
-    return {
-      title: this.document.title,
-    };
-  },
-};
-</script>