Fix broken link for Contact

diff --git a/_includes/lesson_footer.html b/_includes/lesson_footer.html
index f36bc09c368d0b741ffdb0127156e556313233a1..e88210ef728b02dc96e627d049fbeee80945e1ad 100644 (file)
--- a/_includes/lesson_footer.html
+++ b/_includes/lesson_footer.html
@@ -31,7 +31,7 @@
        /
        <a href="{{ site.github.repository_url }}/blob/gh-pages/CITATION">Cite</a>
        /
-       <a href="{{ site.email }}">Contact</a>
+       <a href="mailto:{{ site.email }}">Contact</a>
       </h4>
     </div>
   </div>