Apply suggestions from code review

Co-authored-by: Sylvia Wang <[email protected]>

Author: mjang

content/nginx-one/_index.md

@@ -29,7 +29,7 @@ nd-product: NGINX One
       Review your deployments in a dashboard 
     {{</card >}}
     {{<card title="Connect Kubernetes deployments" titleUrl="/nginx-one/k8s/">}}
-      Monitor deployments for certificates
+      Monitor deployments for control planes
     {{</card >}}
     {{<card title="Organize users with RBAC" titleUrl="/nginx-one/rbac/">}}
       Assign responsibilities with role-based access control