Update __redirects

Author: ngayerie

public/__redirects

@@ -1185,6 +1185,8 @@
 /support/troubleshooting/disruptive-maintenance/ /support/disruptive-maintenance/ 301
 /support/about-cloudflare/enterprise-documentation/customer-incident-management-policy/ /support/customer-incident-management-policy/ 301
 /support/about-cloudflare/cloudflare-status/ /support/cloudflare-status/ 301
+/support/account-management-billing/billing-cloudflare-plans/understanding-cloudflare-sales-tax/ /support/account-management-billing/understanding-cloudflare-sales-tax/ 301
+/support/account-management-billing/billing-cloudflare-plans/cloudflare-billing-policy/ /support/account-management-billing/cloudflare-billing-policy/ 301
 
 # r2
 /r2/platform/s3-compatibility/api/ /r2/api/s3/api/ 301