Update tvm-prerequisites.md

Author: denisebmsft

defender-vulnerability-management/tvm-prerequisites.md

@@ -38,7 +38,7 @@ To start a trial or to purchase Defender Vulnerability Management, see [Sign up
 
 ## Roles and permissions
 
-Defender Vulnerability Management uses the [Microsoft Defender XDR Unified role-based access control]((/defender-xdr/manage-rbac)) (RBAC) model, which provides a single permissions management experience with a central location for administrators to control user permissions across different security solutions, such as Defender for Endpoint and Defender Vulnerability Management.
+Defender Vulnerability Management uses the [Microsoft Defender XDR Unified role-based access control](/defender-xdr/manage-rbac) (Unified RBAC) model, which provides a single permissions management experience with a central location for administrators to control user permissions across different security solutions, such as Defender for Endpoint and Defender Vulnerability Management.
 
 - **Read** permissions enable your security team to view Defender Vulnerability Management data for software, weaknesses, missing KBs, advanced hunting, security baselines assessment, and devices.