edit_button.html

{% if include.path %}
  {% assign pagePath = include.path %}
{% elsif page.relative_path %}
  {% assign pagePath = page.relative_path %}
{% else %}
  {% assign pagePath = page.path  %}
{% endif %}
<a
  data-toggle="tooltip"
  data-placement="top"
  title="Edit this on Github"
  class="icon-edit"
  href="{{ site.github.repository_url }}/edit/master/docs/{{ pagePath }}"
  target="_blank"
></a>