Add a link to the core challenges

Author: AnatoliB

articles/azure-functions/durable/durable-functions-orchestration-versioning.md

@@ -13,7 +13,7 @@ ms.custom: fasttrack-edit
 
 ## Overview
 
-Orchestration Versioning addresses the core challenge of deploying changes to orchestrator functions while maintaining the deterministic execution model that Durable Functions requires. Without this feature, breaking changes to orchestrator logic or activity function signatures would cause in-flight orchestration instances to fail during replay because they would break the [determinism requirement](durable-functions-code-constraints.md) that ensures reliable orchestration execution.
+Orchestration Versioning addresses [the core challenge](durable-functions-versioning.md) of deploying changes to orchestrator functions while maintaining the deterministic execution model that Durable Functions requires. Without this feature, breaking changes to orchestrator logic or activity function signatures would cause in-flight orchestration instances to fail during replay because they would break the [determinism requirement](durable-functions-code-constraints.md) that ensures reliable orchestration execution.
 
 Sub-orchestrations can also leverage this feature.