Fix broken link to Unit Tests

Emil Vaagland · Emil Vaagland · commit d8f1d47e2201 · 2016-09-28T11:45:39.000+02:00
diff --git a/index.html b/index.html
@@ -88,7 +88,7 @@ <h3>Unit and Integration Testing</h3>
 Codeception is built on top of <strong>PHPUnit</strong> and is able to execute its tests. 
 Integration tests can be improved with commands for database interactions.
 <br>
-<a class="btn btn-learn" href="/docs/05-UnitTests.md">Learn More</a>
+<a class="btn btn-learn" href="/docs/05-UnitTests">Learn More</a>
     </p>
   </div>
 
