Fixing GH code urls in 'Reference guide'

Author: Adam Plocieniak

docs/reference.html

@@ -15,7 +15,7 @@ <h2 class="mb-0" id="{{ file.name | slugify }}">{{ export.name }}</h2>
     <div class="mb-3 f5">
       {% for source in export.sources %}
       Defined in:
-      <a href="{{ site.github.repository_url }}/blob/{{ revision }}/src/{{ source.fileName }}#L{{ source.line }}">
+      <a href="{{ site.github.repository_url }}/blob/{{ revision }}/{{ source.fileName }}#L{{ source.line }}">
         {{ source.fileName }}:{{ source.line }}
       </a>
       {% endfor %}