index: include the correct 'education' file in the main section (#65)

As a consequence, the unnecessary white-spaces have been removed.

index.html

@@ -2,19 +2,17 @@
 layout: default
 ---
 
-            
+
 {% include career-profile.html %}
-            
+
 {% if site.education_in_main %}
-    {% include education-section.html %}
+    {% include education.html %}
 {% endif %}
-            
+
 {% include experience.html %}
-            
+
 {% include projects.html %}
-            
+
 {% include publications.html %}
-            
+
 {% include skills.html %}
-
-