chore: update polis docs (#2226)

* added docs for new env var in Polis - ADMIN_PORTAL_HIDE_DIRECTORY_SYNC

* cleanup of ADMIN_PORTAL_HIDE_AUDIT_LOGS, tweaked text for NEXTAUTH_ACL

* chore: apply suggestions from code review

* format

---------

Co-authored-by: Vincent <[email protected]>

Author: deepakprabhakara

docs/polis/deploy/env-variables.mdx

@@ -420,16 +420,17 @@ email verification token. More details [here](https://next-auth.js.org/configura
 ### **NEXTAUTH_ACL**
 
 Set this to a comma separated string of email addresses or glob patterns like: `[email protected],*@marvel.com`. Access will be
-denied to email addresses which don't match. If you don't specify any value access is denied to all.
+denied to email addresses which don't match. If you don't specify any value access is denied to all and magic links are turned
+off.
 
 ### **NEXTAUTH_ADMIN_CREDENTIALS**
 
 Set this to a comma separated string of the pattern `email:password` to enable login to the Admin Portal, for example
 `[email protected]:Password123`. If you don't specify any value access is denied to all.
 
-### **ADMIN_PORTAL_HIDE_AUDIT_LOGS**
+### **ADMIN_PORTAL_HIDE_DIRECTORY_SYNC**
 
-Set this to `true` if you want to hide the Audit Logs product in the sidebar.
+Set this to `true` if you want to hide the Directory Sync product in the sidebar.
 
 Default: `false`