fix: update mollie host

Author: leuke-naam

app/controllers/members/payments_controller.rb

@@ -55,7 +55,7 @@ def pay_activities
       end
 
       # Check if it's a valid URI and matches your whitelist of acceptable domains (e.g., only http(s)://example.com)
-      if url.is_a?(URI::HTTP) && ['mollie.com'].include?(url.host)
+      if url.is_a?(URI::HTTP) && ['www.mollie.com'].include?(url.host)
         redirect_to(url.to_s)
       else
         # Fallback to a safe default redirect if the URI is invalid or not in the whitelist