Update footer.html

Author: cansavvy

assets/footer.html

@@ -1,7 +1,7 @@
 <hr>
 <center>
 <div class="container">
-  <iframe class="responsive-iframe" src="https://c-savonen.shinyapps.io/widget-survey/?course_name=intro_to_reproducibility" style="width: 400px; height: 220px; overflow: auto;"></iframe>
+  <iframe class="responsive-iframe" src="https://c-savonen.shinyapps.io/widget-survey/?course_name=reproducibility" style="width: 400px; height: 220px; overflow: auto;"></iframe>
 </div>
   </div>
 </center>