Use the right case-study directory

Author: petele

src/content/en/showcase/index.markdown

@@ -29,9 +29,12 @@ description: "Showcase is a page highlighting some of the great web apps availab
   </div>
 </div>
 
-{% assign caseStudyDir = page.context.subdirectories[0] %}
-{% assign caseStudies = caseStudyDir.pages %}
-{% assign caseStudy = caseStudies[2] %}
+{% for caseStudyDir in page.context.subdirectories %}
+  {% if caseStudyDir.id == 'case-study' %}
+    {% assign caseStudy = caseStudyDir.pages | last %}
+    {% break %}
+  {% endif %}
+{% endfor %}
 
 {% if caseStudy %}
 <div class="wf-showcase__featured-casestudy">