Fix broken Kubernetes API documentation links (#6527)

- Update gen-crd-api-reference-docs config to use current k8s API URL structure
- Replace v1.18 API links with current kubernetes.io documentation URLs
- Fix Pod v1 core reference link in deploying-from-private-registry.md
- Fix Event v1 core reference link in troubleshooting/README.md

Author: codeEvolveZenith345

docs/versioned/eventing/troubleshooting/README.md

@@ -37,7 +37,7 @@ kubectl apply --filename example.yaml
 ## Triggering Events
 
 Knative events will occur whenever a Kubernetes
-[`Event`](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.18/#event-v1-core)
+[`Event`](https://kubernetes.io/docs/reference/kubernetes-api/cluster-resources/event-v1/)
 occurs in the `knative-debug` namespace. We can cause this to occur with the
 following commands:
 

docs/versioned/serving/deploying-from-private-registry.md

@@ -7,7 +7,7 @@ function: how-to
 
 # Deploying images from a private container registry
 
-You can configure your Knative cluster to deploy images from a private registry across multiple Services and Revisions. To do this, you must create a list of Kubernetes secrets ([`imagePullSecrets`](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.18/#pod-v1-core)) by using your registry credentials. You must then add those secrets to the default [service account](https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/) for all Services, or the Revision template for a single Service.
+You can configure your Knative cluster to deploy images from a private registry across multiple Services and Revisions. To do this, you must create a list of Kubernetes secrets ([`imagePullSecrets`](https://kubernetes.io/docs/reference/kubernetes-api/workload-resources/pod-v1/)) by using your registry credentials. You must then add those secrets to the default [service account](https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/) for all Services, or the Revision template for a single Service.
 
 ## Prerequisites
 

hack/reference-docs-gen-config.json

@@ -13,7 +13,7 @@
         },
         {
             "typeMatchPrefix": "^k8s\\.io/(api|apimachinery/pkg/apis)/",
-            "docsURLTemplate": "https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.18/#{{lower .TypeIdentifier}}-{{arrIndex .PackageSegments -1}}-{{arrIndex .PackageSegments -2}}"
+            "docsURLTemplate": "https://kubernetes.io/docs/reference/kubernetes-api/{{arrIndex .PackageSegments -2}}/{{lower .TypeIdentifier}}/"
         },
         {
             "typeMatchPrefix": "^knative\\.dev/pkg/apis/duck",