fix ref link which appears to break with latest version of hugo

content/04-test-prod/01-review-test-prod-solution.md

@@ -110,4 +110,4 @@ If your initial workload requires access either to or from the internet, then we
 
 ### On-premises network integration
 
-Your test and production workloads might require connectivity to on-premises resources and services over a private connection. If you have not already established this connectivity, see [Hybrid Networking]({{< relref "/05-extend/01-hybrid-networking/" >}}) for an overview of your options and detailed step-by-step instructions for setting up a site-to-site VPN connection.
+Your test and production workloads might require connectivity to on-premises resources and services over a private connection. If you have not already established this connectivity, see [Hybrid Networking]({{< relref "01-hybrid-networking" >}}) for an overview of your options and detailed step-by-step instructions for setting up a site-to-site VPN connection.