Adjusts language, adds link to root url

app/views/candidate_mailer/welcome.html.erb

@@ -27,7 +27,7 @@
     <td>
       <br><br>
       <p>
-        Or, visit <%= root_url %> and enter your Test ID to begin your test.
+        Or, visit <%= link_to nil, root_url %> and enter your Test ID to begin your test.
         Your Test ID is: <strong><%= @candidate.test_hash %></strong>.<br><br>
         Once we have evaluated your answers, your recruiter will be in touch. Good luck!
       </p>