Fix trial form path

app/views/dashboard/projects/_blank_state_ee_trial.html.haml

@@ -12,5 +12,5 @@
         = link_to "Enterprise Edition products", "https://about.gitlab.com/products/", target: "_blank", rel: "noopener noreferrer nofollow"
       You can try these out for free without
       any obligation or payment details.
-    = link_to new_trial_path, class: "btn btn-new" do
+    = link_to new_admin_trials_url, class: "btn btn-new" do
       Start free trial