Update whats-new.md

Author: DebLanger

exposure-management/whats-new.md

@@ -31,11 +31,11 @@ Security Exposure Management is currently in public preview.
 
 Access control to Microsoft Security Exposure Management can now be managed using Microsoft Defender XDR Unified Role-Based Access Control (RBAC) permissions model with dedicated and granular permissions.
 
-This new capability enables admins to grant their posture managers with an access to Exposrue Management data and experiences with the least privileges access approach rather than the Microsoft Azure Entra ID roles being used so far, which is still supported and can be continue to be used if needed.
+This new capability enables admins to grant their posture managers with access to Exposure Management data and experiences with the least privilege access approach rather than the Microsoft Azure Entra ID roles, which is still supported and be used if needed.
 
-To learn more about Microsoft Security Exposure Management access management using Microsoft Defender XDR Unified RBAC permissions model, see [Get started with Microsoft Security Exposure Management](/security-exposure-management/prerequisites). 
+To learn more about Microsoft Security Exposure Management access management using Microsoft Defender XDR Unified RBAC permissions model, see [Prerequisites and support](/security-exposure-management/prerequisites). 
 
-To learn more about creating new custom roles in Microsoft Defender XDR Unified RBAC, see [Create custom roles in Microsoft Defender XDR Unified RBAC](/defender-xdr/create-custom-rbac-roles?view=o365-worldwide).
+To learn more about creating new custom roles in Microsoft Defender XDR Unified RBAC, see [Create custom roles in Microsoft Defender XDR Unified RBAC](/defender-xdr/create-custom-rbac-roles).
 
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