fix typo

site/content/installation/installing-nic/upgrade-to-v4.md

@@ -17,7 +17,7 @@ For NGINX Plus users, there is a third step to create a Secret for your license.
 
 ## Update custom resource apiVersion
 
-If the Helm chart you have been using is `v2.x`, before upgrading to NGINX Ingress Controller 4.0.0 you must update your GlobalConfiguration, Policy and TransportServer resources from `apiVersion: k8s.nginx.org/v1alpha1` to `apiVersion: k8s.nginx.org/v1`
+If the Helm chart you have been using is `v2.x`, before upgrading to NGINX Ingress Controller 4.0.0 you must update your GlobalConfiguration, Policy and TransportServer resources from `apiVersion: k8s.nginx.org/v1alpha1` to `apiVersion: k8s.nginx.org/v1`.
 
 If the Helm chart you have been using is `v1.0.2` or earlier (NGINX Ingress Controller `v3.3.2`), upgrade to Helm chart `v1.4.2` (NGINX Ingress Controller `v3.7.2`) before updating your GlobalConfiguration, Policy and TransportServer resources.
 
@@ -61,7 +61,7 @@ spec:
 If a *GlobalConfiguration*, *Policy* or *TransportServer* resource is deployed with `apiVersion: k8s.nginx.org/v1alpha1`, it will be **deleted** during the upgrade process.
 {{</ warning >}}
 
-Please run below `kubectl` commands before upgrading to v4.0.0 Custom Resource Definitions (CRDs)
+Once above specified custom resources are moved to `v1` ,please run below `kubectl` commands before upgrading to v4.0.0 Custom Resource Definitions (CRDs)
 
 ```shell
 kubectl patch customresourcedefinitions transportservers.k8s.nginx.org --subresource='status' --type='merge' -p '{"status":{"storedVersions": ["v1"]}}'