remove extra backtick typo

chrisvfritz · chrisvfritz · commit a43536b11d83 · 2016-08-25T10:35:16.000-04:00
diff --git a/src/guide/components.md b/src/guide/components.md
@@ -640,7 +640,7 @@ Let's see it in action:
     v-model="message"
   ></my-input>
 </div>
-````
+```
 
 ``` js
 Vue.component('my-input', {
