fixed security group link

Author: ajburnle

articles/active-directory/governance/TOC.yml

@@ -35,7 +35,7 @@
       - name: Review access to Microsoft 365 groups - Microsoft Graph
         href: https://docs.microsoft.com/graph/tutorial-accessreviews-m365group
       - name: Review access to security groups - Microsoft Graph
-        href: https://docs.microsoft.com/graph/tutorial-accessreviews-m365group
+        href: https://docs.microsoft.com/graph/tutorial-accessreviews-securitygroup
       - name: Review access to privileged roles - Microsoft Graph
         href: https://docs.microsoft.com/graph/tutorial-accessreviews-roleassignments
 - name: Concepts