[FIX] website_shift: Wrong mail on regular shift

Fix the wrong email address that is shown on the public page that show
available shift for irregular worker.

beesdoo_website_shift/views/shift_website_templates.xml

@@ -45,7 +45,7 @@
             <div class="col-md-12">
               <p class="text-center">
                 Subscribe via the member office or via
-                <a href="mailto:volant@bees-coop.be">volant@bees-coop.be</a>
+                <a href="mailto:membre@bees-coop.be">membre@bees-coop.be</a>
               </p>
             </div>
           </div>