[Email Security] Move Partner TLS (#21733)

* Nested Partner TLS under Pre-delivery deployment

* Added a redirect

Author: caley-b

public/__redirects

@@ -450,7 +450,7 @@
 /cloudflare-one/email-security/directories/manage-ms-directories/ /cloudflare-one/email-security/directories/manage-integrated-directories/ 301
 /cloudflare-one/email-security/directories/manage-ms-directories/manage-groups-directory/ /cloudflare-one/email-security/directories/manage-integrated-directories/manage-groups-directory/ 301
 /cloudflare-one/email-security/directories/manage-ms-directories/manage-users-directory/ /cloudflare-one/email-security/directories/manage-integrated-directories/manage-users-directory/ 301
-
+/cloudflare-one/email-security/setup/partner-domain-tls/ /cloudflare-one/email-security/setup/pre-delivery-deployment/partner-domain-tls/ 301
 
 # firewall
 /firewall/api/cf-lists/ /waf/tools/lists/lists-api/ 301

src/content/docs/cloudflare-one/email-security/setup/partner-domain-tls.mdx renamed to src/content/docs/cloudflare-one/email-security/setup/pre-delivery-deployment/partner-domain-tls.mdx

@@ -2,7 +2,7 @@
 title: Partner domain TLS
 pcx_content_type: how-to
 sidebar:
-  order: 3
+  order: 5
 ---
 
 To add additional TLS (Transport Layer Security) requirements for emails coming from certain domains, you can enforce higher levels of SSL/TLS inspection. If TLS is required, mail without TLS from the specified domain will be dropped.