fix: variable in plugins.md and key attribute in components.md (#565)

* support Indonesia language - guides\concepts

* The concepts section is finished for Indonesia

* added indonesian documentation: the components-glossary directory

* fix: variable in plugins.md and key attribute in components.md

Co-authored-by: Debbie O'Brien <debs-obrien@users.noreply.github.com>

content/en/guides/directory-structure/components.md

@@ -45,7 +45,7 @@ Using `$fetchState.pending` we can show a message when the data is waiting to be
     <p v-if="$fetchState.pending">Loading....</p>
     <p v-else-if="$fetchState.error">Error while fetching mountains</p>
     <ul v-else>
-      <li v-for="(mountain, index) in mountains" :key="index.id">
+      <li v-for="(mountain, index) in mountains" :key="index">
         {{ mountain.title }}
       </li>
     </ul>

content/en/guides/directory-structure/plugins.md

@@ -123,14 +123,14 @@ Then we can use it directly in your page components:
 
 ```js{}[pages/index.vue]
 <template>
-  <h1>{{ title }}</h1>
+  <h1>{{ post.title }}</h1>
 </template>
 
 <script>
 export default {
 	async asyncData ({ $axios, params }) {
-	    const  posts  = await $axios.$get(`https://api.nuxtjs.dev/posts/${params.id}`)
-	    return { posts }
+	    const  post  = await $axios.$get(`https://api.nuxtjs.dev/posts/${params.id}`)
+	    return { post }
 	  }
 }
 </script>