Fix product name in example readme

Author: javorszky

examples/custom-resources/oidc/README.md

@@ -20,8 +20,8 @@ kubectl config set-context --namespace default --current
 ## Prerequisites
 
 1. Follow the [installation](https://docs.nginx.com/nginx-ingress-controller/installation/installation-with-manifests/)
-   instructions to deploy the Ingress Controller. This example requires that the HTTPS port of the Ingress Controller is
-   `443`.
+   instructions to deploy NGINX Ingress Controller. This example requires that the HTTPS port of the Ingress
+   Controller is `443`.
 2. Save the public IP address of the Ingress Controller into `/etc/hosts` of your machine:
 
     ```text