Add link for List Rendering lesson

Author: rahaug

src/guide/list.md

@@ -1,5 +1,7 @@
 # List Rendering
 
+<div class="vueschool"><a href="https://vueschool.io/lessons/vuejs-loops?friend=vuejs" target="_blank" rel="sponsored noopener" title="Learn how to render lists on Vue School">Learn how to render list with a free Vue School lesson</a></div>
+
 ## Mapping an Array to Elements with `v-for`
 
 We can use the `v-for` directive to render a list of items based on an array. The `v-for` directive requires a special syntax in the form of `item in items`, where `items` is the source data array and `item` is an **alias** for the array element being iterated on: