add payment learn more button

app/javascript/template_builder/payment_settings.vue

@@ -141,6 +141,13 @@
             </span>
           </button>
         </form>
+        <a
+          v-if="!isConnected"
+          class="block link text-center mt-1"
+          href="https://www.docuseal.co/blog/accept-payments-and-request-signatures-with-ease"
+          target="_blank"
+          data-turbo="false"
+        >Learn more</a>
       </div>
     </ul>
   </span>