I have a list that is represented as separate files:
list/element1.md

---
title: Element 1
---

list/element2.md

---
title: Element 2
---

list/list.json

{
  "tags": "list"
}

I would like to output them as collection.
I iterate over them in the separate .njk file (this is an example, the real layout is a little bit more complicated):
inlcudes/list.njk

<ol>
  {% for element in collections.list %}
    <li>
        {{element.data.title}}
    </li>
  {% endfor %}
</ol>

Then I include this .njk file in my final .md page file.
pages/home.md

---
layout: page.njk
title: Home
templateEngineOverride: md,njk
---
# Home page
{% include 'list.njk' %}

The problem is that content inside for-loop is wrapped inside pre tag:

<h1>Home page</h1>
<ol>
<pre><code>&lt;li&gt;
    Element 2
&lt;/li&gt;
&lt;li&gt;
    Element 1
&lt;/li&gt;
</code></pre>
</ol>

I tried different combinations of values in templateEngineOverride parameter but none worked.
Yes, I can use .njk instead .md as page file extension, but I need to be able to use markdown in it. Also I can't output list directly in .md file as I want to put this list in another pages with include.

Please help. Are there any solutions?