Remove white space as it was causing issues with Markdown and parsing as code blocks

- Close #279

_includes/group-by-array

@@ -20,28 +20,28 @@
 {% assign __names =  __names | sort %}
 {% for name in __names | sort %}
 
-  <!-- If not equal to previous then it must be unique as sorted -->
-  {% unless name == previous %}
+<!-- If not equal to previous then it must be unique as sorted -->
+{% unless name == previous %}
 
-    <!-- Push to group_names -->
-    {% assign group_names = group_names | push: name %}
-  {% endunless %}
+<!-- Push to group_names -->
+{% assign group_names = group_names | push: name %}
+{% endunless %}
 
-  {% assign previous = name %}
+{% assign previous = name %}
 {% endfor %}
 
 
 <!-- group_items -->
 {% for name in group_names %}
 
-  <!-- Collect if contains -->
-  {% assign __item = __empty_array %}
-  {% for __element in include.collection %}
-    {% if __element[include.field] contains name %}
-      {% assign __item = __item | push: __element %}
-    {% endif %}
-  {% endfor %}
-
-  <!-- Push to group_items -->
-  {% assign group_items = group_items | push: __item %}
+<!-- Collect if contains -->
+{% assign __item = __empty_array %}
+{% for __element in include.collection %}
+{% if __element[include.field] contains name %}
+{% assign __item = __item | push: __element %}
+{% endif %}
+{% endfor %}
+
+<!-- Push to group_items -->
+{% assign group_items = group_items | push: __item %}
 {% endfor %}