<div class="aside col-auto">
    <img class="mb-3 sideToggle d-inline-block d-md-none" src="/img/exchange-icon.svg" width="20" alt="" srcset=""/>
    <a href="/"><div class="logo"><img src="/img/logo-intro.png" width="185" alt="logo" srcset=""/></div></a>
    <ul class="nav flex-column">
        {% for nav_item in nav %}
        {% set path = "nav-" + loop.index | string %}
        {% set level = 1 %}
        {% include "partials/nav-item.html" %}
        {% endfor %}
    </ul>
</div>

<div class="aside col-auto">
    <img class="mb-3 sideToggle d-inline-block d-md-none" src="/img/exchange-icon.svg" width="20" alt="" srcset=""/>
    <a href="/">
        <div class="logo"><img src="/img/logo-intro.png" width="185" alt="logo" srcset=""/></div>
    </a>
    <ul class="nav flex-column">
        {% for nav_item in nav %}
        {% set path = "nav-" + loop.index | string %}
        {% set level = 1 %}
        {% include "partials/nav-item.html" %}
        {% endfor %}
        <li class="nav-item">
            <a class="nav-link" href="https://github.com/http4k/http4k">
                <img src="/img/GitHub-Mark-black.png" width="28" alt="See source on GitHub">&nbsp;&nbsp;Source Code</a>
        </li>
    </ul>
</div>

Add GitHub link to docs
Add GitHub link to docs
