Docs: fix external url links (#6519)

Docs: fix external links

Author: nginx-aoife

docs/content/configuration/host-and-listener-collisions.md

@@ -15,7 +15,7 @@ This document explains how F5 NGINX Ingress Controller handles host and listener
 
 If multiple resources contend for the same host or listener, NGINX Ingress Controller will pick the winner based on the `creationTimestamp` of the resources: the oldest resource will win. In case there are more than one oldest resource (their `creationTimestamp` is the same),  NGINX Ingress Controller will choose the resource with the lexicographically smallest `uid`.
 
-{{< note >}} The `creationTimestamp` and `uid` fields are part of the [ObjectMeta](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.19/#objectmeta-v1-meta) resource. {{< /note >}}
+{{< note >}} The `creationTimestamp` and `uid` fields are part of the [ObjectMeta](https://kubernetes.io/docs/reference/kubernetes-api/common-definitions/object-meta/) resource. {{< /note >}}
 
 ---
 

docs/content/installation/integrations/app-protect-waf/installation.md

@@ -209,7 +209,7 @@ To enable the NGINX App Protect DoS Module:
 
 {{< include "installation/manifests/verify-pods-are-running.md" >}}
 
-For more information, see the [Configuration guide]({{< relref "installation/integrations/app-protect-waf/configuration.md" >}}) and the NGINX Ingress Controller with App Protect example resources on GitHub [for VirtualServer resources](https://github.com/nginxinc/kubernetes-ingress/tree/v{{< nic-version >}}/examples/custom-resources/app-protect-waf) and [for Ingress resources](https://github.com/nginxinc/kubernetes-ingress/tree/v{{< nic-version >}}/examples/ingress-resources/app-protect-waf" >}}).
+For more information, see the [Configuration guide]({{< relref "installation/integrations/app-protect-waf/configuration.md" >}}) and the NGINX Ingress Controller with App Protect example resources on GitHub [for VirtualServer resources](https://github.com/nginxinc/kubernetes-ingress/tree/v{{< nic-version >}}/examples/custom-resources/app-protect-waf) and [for Ingress resources](https://github.com/nginxinc/kubernetes-ingress/tree/v{{< nic-version >}}/examples/ingress-resources/app-protect-waf).
 
 ---
 

docs/content/logging-and-monitoring/prometheus.md

@@ -47,7 +47,7 @@ To view metrics captured this way, the following is required:
 LATEST=$(curl -s https://api.github.com/repos/prometheus-operator/prometheus-operator/releases/latest | jq -cr .tag_name)
 curl https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/$LATEST/example/prometheus-operator-crd/monitoring.coreos.com_servicemonitors.yaml | kubectl create -f -
 ```
-* A working [Prometheus resource and Prometheus Operator](https://prometheus-operator.dev/docs/user-guides/getting-started/)
+* A working [Prometheus resource and Prometheus Operator](https://prometheus-operator.dev/docs/getting-started/introduction/)
 
 ## Available Metrics