Add redirect URL to the daily email form

- Format JSON for settings.
- Set the redirect URL to `/welcome`.

source/_includes/daily-email-form.html.twig

@@ -16,7 +16,66 @@
     data-uid="{{ uid }}"
     data-format="inline"
     data-version="5"
-    data-options='{"settings":{"after_subscribe":{"action":"message","success_message":"Success! Now check your email to confirm your subscription.","redirect_url":""},"analytics":{"google":null,"fathom":null,"facebook":null,"segment":null,"pinterest":null,"sparkloop":null,"googletagmanager":null},"modal":{"trigger":"timer","scroll_percentage":null,"timer":5,"devices":"all","show_once_every":15},"powered_by":{"show":true,"url":"https://convertkit.com/features/forms?utm_campaign=poweredby&utm_content=form&utm_medium=referral&utm_source=dynamic"},"recaptcha":{"enabled":false},"return_visitor":{"action":"show","custom_content":""},"slide_in":{"display_in":"bottom_right","trigger":"timer","scroll_percentage":null,"timer":5,"devices":"all","show_once_every":15},"sticky_bar":{"display_in":"top","trigger":"timer","scroll_percentage":null,"timer":5,"devices":"all","show_once_every":15}},"version":"5"}'
+    data-options='{
+      "settings": {
+        "after_subscribe": {
+          "action": "message",
+          "redirect_url": "{{ site.url }}/welcome",
+          "success_message": null
+        },
+
+        "analytics": {
+          "facebook": null,
+          "fathom": null,
+          "google": null,
+          "googletagmanager": null,
+          "pinterest": null,
+          "segment": null,
+          "sparkloop": null
+        },
+
+        "modal": {
+          "devices": "all",
+          "scroll_percentage": null,
+          "show_once_every": 15,
+          "timer": 5,
+          "trigger": "timer"
+        },
+
+        "powered_by": {
+          "show": true,
+          "url": "https://convertkit.com/features/forms?utm_campaign=poweredby&utm_content=form&utm_medium=referral&utm_source=dynamic"
+        },
+
+        "recaptcha": {
+          "enabled": false
+        },
+
+        "return_visitor": {
+          "action": "show",
+          "custom_content": ""
+        },
+
+        "slide_in": {
+          "devices": "all",
+          "display_in": "bottom_right",
+          "scroll_percentage": null,
+          "show_once_every": 15,
+          "timer": 5,
+          "trigger": "timer"
+        },
+
+        "sticky_bar": {
+          "devices": "all",
+          "display_in": "top",
+          "scroll_percentage": null,
+          "show_once_every": 15,
+          "timer": 5,
+          "trigger": "timer"
+        }
+      },
+      "version": "5"
+    }'
     min-width="400 500 600 700 800"
   >
     <div data-style="clean">