Updated links to examples

Author: stephenchouca

_data/where_taco.yml

@@ -2,12 +2,12 @@ items:
   - title: Data Analytics
     img: data-analytics.png
     call_to_action_name: See an example
-    call_to_action_link: docs/data_analytics/index.html 
+    call_to_action_link: docs/data_analytics.html 
   - title: Scientific Computing
     img: scientific-computing.png
     call_to_action_name: See an example
-    call_to_action_link: docs/scientific_computing/index.html 
+    call_to_action_link: docs/scientific_computing.html 
   - title: Machine Learning 
     img: machine-learning.png
     call_to_action_name: See an example
-    call_to_action_link: docs/machine_learning/index.html 
+    call_to_action_link: docs/machine_learning.html