(AzureCXP) fixes MicrosoftDocs/azure-docs#95002

Adds Link to sample DSC resource modules used as part of Buil-in Azure Policy Guest configuration.

Author: AnuragSingh-MSFT

articles/governance/policy/concepts/guest-configuration.md

@@ -341,6 +341,7 @@ locations:
 - [Built-in policy definitions - Guest Configuration](../samples/built-in-policies.md#guest-configuration)
 - [Built-in initiatives - Guest Configuration](../samples/built-in-initiatives.md#guest-configuration)
 - [Azure Policy samples GitHub repo](https://github.com/Azure/azure-policy/tree/master/built-in-policies/policySetDefinitions/Guest%20Configuration)
+- [Sample DSC resource modules](https://github.com/Azure/azure-policy/tree/master/samples/GuestConfiguration/package-samples/resource-modules)
 
 ## Next steps