Update network-security-perimeter-concepts.md

Update incorrect link to NSP Portal creation.

Author: ljtill

articles/private-link/network-security-perimeter-concepts.md

@@ -115,4 +115,4 @@ Network security perimeter is currently available in all Azure public cloud regi
 ## Next steps
 
 > [!div class="nextstepaction"]
-> [Create a network security perimeter in the Azure portal](./network-security-perimeter-diagnostic-logs.md)
+> [Create a network security perimeter in the Azure portal](./create-network-security-perimeter-portal.md)