Update footer.html

wiki/footer.html

@@ -18,7 +18,7 @@
       </div>
       <div class="col-lg-3 col-xs-12">
         <h4 class="mt-lg-0 mt-sm-4 mb-3">Contact</h4>
-        <p>Duboisdomein 30, 6229 GT Maastricht</p>
+        <a href="https://www.google.com/maps/dir/50.839552,5.7147392/Duboisdomein+30,+6229+GT+Maastricht/@50.8385911,5.7082893,17.05z/data=!4m9!4m8!1m1!4e1!1m5!1m1!1s0x47c0e99a4e2ce6b1:0x30f2c2d0185fb01!2m2!1d5.708562!2d50.839405?entry=ttu">Duboisdomein 30, 6229 GT Maastricht</a>
         <p class="mb-0">add phone number later</p>
         <a href="mailto:msp-igem@maastrichtuniversity.nl">msp-igem@maastrichtuniversity.nl</a>
       </div>